You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your good name?

USER: I am Donald Edwards.

ASSISTANT: How can I assist you?

USER: I want to cancel my recent reservation due to cancellation trip.

ASSISTANT: Sure, wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting. No reservation found with your name.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a great day.