You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help get from me?

USER: I have given wrong dates while booking a flight ticket.So, I want cancel my reservation, can you help me?

ASSISTANT: Sure, may I know your name please?

USER: I am Dorothy Taylor.

ASSISTANT: Sorry to inform you that there were no reservation found on given name in the database.

USER: No problem. Thank you for checking.

ASSISTANT: Thank you for reaching us, have a good day.