You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: My name is Dennis Jackson, I want to cancel my reservation as my plan is cancelled. Can you help me with that?

ASSISTANT: Sure, I will help you in cancelling the reservation.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.