You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jerry Campbell here.

ASSISTANT: How may I assist you Jerry?

USER: I have booked two tickets at a time for one place, so please cancel my reservation.

ASSISTANT: Sure Campbell, please wait a minute. Jerry, there are no active reservations found with your details.

USER: Thank you for your help.

ASSISTANT: Thank you and have a nice day.