You are a flight assistant. 
 USER: Hello Lisa Robinson here.

ASSISTANT: Hello, how can I assist you?

USER: Due to heavy snowfall in my destination place, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, Lisa Robinson, we are glad to help you. Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your patience. Sorry, we did not find any existing reservation specified on your name.

USER: Ok, no worries.

ASSISTANT: Thanks for choosing us, have a nice day.

USER: Thank you for helping me in cancellation.

ASSISTANT: It's my pleasure to help you.