You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, ABC agency. How may I help you?

USER: I have done booking in your agency, but now I my grand mother has passed away. So, I am willing to cancel my flight ticket booking done by me previously.

ASSISTANT: Sure, on what name you done your reservation previously?

USER: Booking is done on Timothy Allen.

ASSISTANT: OK, please wait I will check it.

USER: Sure, please check it.

ASSISTANT: Thank you for waiting, as per your information there is no ticket booked on your name. Your ticket is not confirmed I think previously, thank you for reaching us. Have a nice day.

USER: Yes, thank you for the information.

ASSISTANT: Welcome.