You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. I hope you are doing good today, how can I assist you?

USER: I planned a trip to Seattle last week and I reserved a ticket, but I want to cancel my reservation, due to financial issues. Can you help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: To check your previous reservation, may I know your name please?

USER: Sure, my name is David Brown.

ASSISTANT: Please wait for while, let me check your reservation.

USER: Sure, take your time.

ASSISTANT: As per your request I checked the reservation on your name, but there is no reservation on your name in our database.

USER: That's ok, I will check for other alternatives, anyway thank you for your information.

ASSISTANT: Thank you for opting us. Have a great day.