You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recently done reservation, can you please help me in this condition?

ASSISTANT: May I know your name?

USER: Sure, I'm Charles Carter here.

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

USER: That's fine.

ASSISTANT: Thank you for choosing us.

USER: Welcome.