You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Paul Lopez. I have booked the ticket in the last week but my planned trip got cancelled. So, I need to cancel the ticket but I don't know the process. Can you please help me to cancel the ticket?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Ok.

ASSISTANT: Sorry Paul Lopez, there is no reservation on your name in our data.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.