You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I'm Sharon Jones. My holiday trip has been cancelled. So, I would like to cancel my reservation. Can you please help me with that?

ASSISTANT: Sure, I will help you with the flight reservation cancellation.

USER: Thank you.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you.

USER: You are welcome.