You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, we are here to help you. May I know your name to proceed further?

USER: Sure, my name is Melissa Green.

ASSISTANT: Ok,  please wait for a while.

USER: Ok, take your time.

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

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for opting us.