You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to cancel the ticket which is booked in the last week?

ASSISTANT: Sure. As an agent, I am here to help you. May I know your name?

USER: Thank you. My name is Gregory Brown.

ASSISTANT: Thank you. Please wait, let me check your reservation status.

USER: Ok.

ASSISTANT: Sorry, I did not find any reservation under your name in our database.

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

ASSISTANT: You are welcome and thank you for choosing us.

USER: You are welcome.