You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Karen Davis.

ASSISTANT: Do you need any assistance from us?

USER: I have some work in hometown, so I would like to cancel my reservation. Can you help me for that?

ASSISTANT: Sure Davis. Wait for a while Davis.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: Ok, that's fine. Thank you for your services.

ASSISTANT: Thank you for choosing us.