You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Frank Martinez, want to cancel my recent reservation due to some personal issue. Please help me out with that.

ASSISTANT: Sure, I am gleeful to help you.

USER: Thanks.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for approaching us.