You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Actually, I want to cancel my reservation which is done recently due to heavy floods, can you please help me in this?

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation details.

USER: Sure, my name is Helen Hall.

ASSISTANT: Sorry Hall, there is no reservation on your name in our data base.

USER: That's ok, anyways thank you for your appreciable service.

ASSISTANT: Thank you for reaching us.