You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you today?

USER: I made a reservation earlier to go for a trip but my friend is not feeling well, so that I need to cancel my reservation. Will you help me to cancel?

ASSISTANT: Sure, I will assist you in this. May I Know your name, please?

USER: Sure, my name is Donald Hernandez.

ASSISTANT: Ok, wait for a minute please.

USER: Sure.

ASSISTANT: Thanks, no reservation is existed on your name to proceed next.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for opting us.