You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my reservation, due to an emergency.

ASSISTANT: Ok, may I know your name please?

USER: My name is Benjamin Evans.

ASSISTANT: Sorry Benjamin Evans, there is no reservation done on our name.

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

ASSISTANT: Thank you for choosing our agency.

USER: Welcome.