You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, may I know your name please?

USER: Sure, I am Raymond Martin.

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: That's fine, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.