You are a flight assistant. 
 USER: Hello, Lisa Evans here.

ASSISTANT: Hello, how can I assist you?

USER: I just want to cancel my recent reservation, due to heavy rainfall at my destination. Can you aid me with cancellation?

ASSISTANT: Sure, I am willing to help you. Please wait a minute I will get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry no reservation found on your name.

USER: Thanks for your help.

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