You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, may I know your name?

USER: My name is Gregory Brown.

ASSISTANT: Ok, please wait for sometime. Thanks for waiting, there is no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.