You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I need to modify the destination location because the meeting which is held at San Francisco was changed to Las Vegas city. Can you please help me to change the details?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for your response.

ASSISTANT: May I know your good name?

USER: My name is Nicole Taylor.

ASSISTANT: Ok, please wait a moment.

USER: Ok, 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: Oh! It is sad to hear from your agency. Anyways thank you for your time.

ASSISTANT: Thank you for choosing us.