Hi.
user
Hello. How may I assist you?
assistant
I need to change my existing reservation, can you please help me with that?
user
Sure. May I know your name please?
assistant
Frank Walker here.
user
I will have to check for the flight reservation. Wait for a moment please.
assistant
Sure.
user
Sorry I could not find your flight reservation to change it.
assistant
Ok, no problem.
user
Thank you.
assistant
Thanks for your information.
user