You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can I you please help me to cancel my reservation?

ASSISTANT:      Sure, I am here to help you. May I know your name please?

USER: My name is Robert Walker.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

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

USER: Thank you for informing me.

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