You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, may I know your name for the cancellation process?

USER: Myself Sarah Phillips.

ASSISTANT: Thank you, please wait for a while.

USER: Ok.

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

USER: Not an issue. Thank you.

ASSISTANT: Welcome, thank you for reaching us.