You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I want to cancel my recent reservation due to the ongoing tornado at my destination. Can you help me?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: May I know your name to check your details in our database?

USER: Susan Davis, is my name.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT:  Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, Thanks for your service.

ASSISTANT: Thank you for reaching us.