You are a flight assistant. 
 USER: Hi.

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

USER: I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: My good name is Emma Taylor.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found your reservation can you help me with your new airport codes?

USER: My new airport codes are LAX - IAD. My travelling dates are 06/20 and 06/22.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a single way station.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1001 AA airlines with single connection with price 100. Shall I proceed with the booking?

USER: You can proceed.

ASSISTANT: Your booking has been done successfully.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.