You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your service?

USER: My name is Jennifer Williams. Owing to emergency I have to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, please wait a moment I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting. There is a booking with your name, can I proceed for the cancellation?

USER: Sure.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us, have a nice day.