You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help 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 will help you with cancellation. May I know your good name?

USER: Thank you for considering my request. Sure, my name is Nicole Moore.

ASSISTANT: Please wait for a moment, while I check for your reservation.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

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

ASSISTANT: Thank you for reaching us,we hope see you again.