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

ASSISTANT: Hello Lisa, how may I help you?

USER: I have booked a flight last week to visit famous tourist place but due to heavy rains I have decided to cancel my reservation. Can you please help me with that?

ASSISTANT: Sure Lisa, please wait for a moment.

USER: Sure, take a time.

ASSISTANT: I find a reservation on your name should I cancel it?

USER: Yes, please cancel it.

ASSISTANT: Ok, your reservation has been successfully cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.