You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jerry Walker.

ASSISTANT: How may I help you out?

USER:  I have planned a trip last week and I had booked a ticket but suddenly my manager called to me a told that there is a network issue held in office so you have to take care of that one he told to me, can you please cancel my ticket booking?

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

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there are no reservations found in our database.

USER: It might be cancelled by some one is my family, thank you for your quick service.

ASSISTANT: Thank you for choosing us.