You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me with cancelling my previous booking now?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Can I have your name please?

USER: I am Janet Roberts.

ASSISTANT: Janet Roberts, we haven't found any reservation under your name in our database.

USER: Oh! That's sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.