You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Daniel Jones. Due to some reason I want to cancel my reservation,will you help me?

ASSISTANT: Sure, I will help you. Please stand by I will revert you.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no reservation found with your name.

USER: OK,not an issue. Thank you for your help.

ASSISTANT: Have a nice day.