You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joshua Davis.

ASSISTANT: How may I oblige you today?

USER: I need your help in cancelling my ticket, because there is heavy rainfall in our place.

ASSISTANT: Sue, please wait a while.

USER: Sure.

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. Thank you for the information.

ASSISTANT: Thank you for serving you.