You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Anthony Perez. I want to cancel my reservation, due to some problems I am unable to travel those dates so can you please cancel my ticket?

ASSISTANT: Sure, please wait a moment I will check your details and proceed further.

USER: Ok.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: Oh! It's ok no problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your service.