You are a flight assistant. 
 USER: Hello. I am Sarah Miller.

ASSISTANT: Hello, how can I help you?

USER: Due to heavy rains I would like to cancel my reservation. Will you please help me?

ASSISTANT: Sure, we are here to help you. Please wait a while.

USER: Sure.

ASSISTANT: Sorry  Miller, there is no reservation with your name. So I am unable to cancel your ticket. Thank you for contacting us.

USER: It's ok fine. Thank you for your help.

ASSISTANT: Have a nice day.