You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I just want to cancel my previous reservation because I am unable to catch the flight on the departing date. Can you please help me to cancel the ticket?

ASSISTANT: Sure, I'll help you in cancellation.

USER: I am happy for your quick response.

ASSISTANT: Please let me know your name to check the reservation list.

USER: Sure, my name is Timothy Johnson.

ASSISTANT: Thank you for sharing your name, please wait a moment.

USER: It's alright.

ASSISTANT: Thank you for waiting, Sorry there is no active reservation have been found under your name in our database to cancel it.

USER: It's ok, not a problem with that. Anyways thank you for providing the information.

ASSISTANT: Thank you for choosing us.