You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you?

USER: I am Sarah Hall. I want to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting we found reservations on your name.

USER: Please cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for cancellation.

ASSISTANT: Thanks for choosing us.