You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello. How may I help you?

USER: I am Andrew Hernandez. I want to cancel my reservation.

ASSISTANT: Ok, please wait a minute. Thanks for your time, I got your reservation. Would you like me to cancel it?

USER: Yes. please.

ASSISTANT: Sure, your reservation is cancelled successfully.

USER: Thank you.

ASSISTANT: Welcome Andrew Hernandez.