You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Samantha Davis here.

ASSISTANT: We found a reservation on your name, shall I cancel it?

USER: Yes, please.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you.