You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Samuel Rodriguez, want to cancel my recent reservation due to some personal problem. Please help me out with that.

ASSISTANT: Sure Samuel, I will help you with that. Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Samuel Rodriguez, no reservation has found under your name to cancel.

USER: It's ok, thank you.

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