You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I have to cancel my flight ticket that I unable to travel to meet my sister that she came to meet me, can you help me in that one?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Nancy Mitchell.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you that, there is no reservation found as per your name in our database.

USER: Ok, not an issue. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us with a query.