You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in cancelling my reservation?

ASSISTANT: Sure, I will try to help you.

USER: Thank you.

ASSISTANT: May I know your name to check the reservation?

USER: I am Christine Moore.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, we couldn't find a reservation on your name to cancel.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.