Hello.
user
Hello. How glad that I can assist you now?
assistant
I want to change my existing reservation, due to some health issue. Can you help me?
user
Sure, I am glad to help you with that one.
assistant
Thank you for accepting my request.
user
Can I know your name please?
assistant
Yes, I am Betty Harris.
user
Please give me a moment.
assistant
Sure.
user
 Thank you for waiting, I have checked in reservation list to change your ticket but could not find any reservation with your name.
assistant
Ok, not an problem. Anyway, thank you for your information.
user
You are most welcome and thank you for approaching us, have a nice day.
assistant