You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Larry Roberts. I would like to cancel my reservation which has been booked earlier this week.

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

USER: Great!.

ASSISTANT: Ok, please wait a moment I will check it.

USER: Please take your time.

ASSISTANT: Sorry, there are no reservations found on this name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing our services.

USER: You are welcome.