How long has the man suffered from the symptoms he described? [originaltext]W: B

W: Bill，is that really you? I haven’t seen you for months.
M: Hello，Christina. Yes，it’s been a long time. Good to see you. How have you been?
W: I’ve been okay. I’ve just been so busy with school. We really should get together and catch up. How about joining me for dinner tonight?
M: I’d love to， but I’m taking off for Miami at 8:00 tonight if everything goes well. I’m going home because my brother is getting married on Saturday morning.
W: That’s great. Congratulations! I hope that you have a nice time at home. You’ll just have to take a rain check on that dinner invitation.
M: Well，what’re you doing now? Maybe we can go to the coffee shop and chat for a while. There’s a quiet， little place I know of down the street.
W: I really wish I could， but I’m on my way to the tennis courts.
M: Tennis courts? I didn’t know you could play tennis.
W: It sounds like that， but actually I can’t. I’m taking lessons so I can learn. My roommate is on the tennis team and she’s gotten me interested in the sport. Do you know how to play?
M: A little，but I haven’t played for years. I really like the game， though. When I come back from my trip，I think I’ll join you in taking lessons.
W: It’s a deal! Just give me a call when you get back.
M: You got it.