You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: Sure, may I know your name please?

USER: Thank you for your response, my name is Edward Taylor.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found for the user name in our back end to cancel it.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.