You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Laura Campbell. Due to a sudden meeting, my trip is cancelled. Could you help me in cancelling the reservation?

ASSISTANT: Sure, hold on for a moment. Sorry, there is no existing reservation found with your name.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.Have a nice day.