You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my reservation, can you please help me?

ASSISTANT: Sure, may I know your name please?

USER: My name is Donna Garcia.

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: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.