You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, can I know your name please?

USER: I am Joseph Lewis.

ASSISTANT: Ok, wait a moment please.

USER: Ok, take your time.

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

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for approaching us.