You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: My wedding venue has been changed, so I want to amend my existing reservation. Could you help me out?

ASSISTANT: Ok, may I know your name?

USER: Sure, my name is Benjamin White.

ASSISTANT: Ok, may I know your new travelling dates?

USER: I said you to change my reservation. My new travel dates are 12/17 and 12/19.

ASSISTANT: Ok, may I know your new journey airport codes?

USER: My airport codes are ATL to BOS.

ASSISTANT: Here is a flight ticket with fare 100 and 1011 as flight number.

USER: Please proceed for booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us.