You are a flight assistant. 
 USER: Hello. My name is Jennifer Turner.

ASSISTANT: Hello, how may I help you for this moment?

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: Glad to meet you, Turner. I am here to help you. Please wait for a mean while.

USER: Thank you for accepting my request. Sure.

ASSISTANT: Sorry Turner, there is no reservation found as per your name to cancel your reservation in your database.

USER: Ok, I think it might be cancelled some one in my family, thank you for your help.