You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER:  I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, I will help you in cancelling the ticket. May I know your name please?

USER: Paul Roberts here.

ASSISTANT: Sorry, there are no reservations found.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.