Hello.
user
Hello. How may I guide you?
assistant
I am planning to cancel my recent reservation, due to health issue. Can you please cancel my ticket?
user
Sure, I can help you and on whose name the flight ticket has booked previously?
assistant
Thank you. My name is David Nelson.
user
Please wait for a while to check it.
assistant
Sure.
user
 Thank you for waiting, I have checked in reservation list to cancel your ticket but could not find any reservation with your name.
assistant
That's fine, thank you for your service.
user
Thank you for consulting our agency and have a nice day.
assistant