You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation which I have done last week because my trip got cancelled. Please help me out with that.

ASSISTANT: Sure, may I know your name to cancel the reservation?

USER: Sure, myself Michelle Taylor.

ASSISTANT: Wait a while, kindly.

USER: Sure.

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

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.