You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, help me in that?

ASSISTANT: Sure, I am glad to help you. May I know your name?

USER: I am Jacob Nelson.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you reaching us.