You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my recent  reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, can I know your full name?

USER: Betty Moore.

ASSISTANT: We found your reservation, can I proceed for cancellation?

USER: Yes, you can.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.