You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: I am Daniel Rodriguez. I want to change my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, we are here to assist you. Please wait a moment I will check the reservation list.

USER: Sure, take your time.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.