Hello.
user
Hello.
assistant
I am Dennis Hall.
user
How can I guide you?
assistant
My holiday trip has been postponed, so I would like to change my reservation. Can you help me with that?
user
Sure, I will help you that. Give me a minute.
assistant
Sure, take your time.
user
Sure, can you please give me your planning dates and airport codes?
assistant
I want to fly on 03/18 and 03/20. My new journey starts from ATL to JFK.
user
I found a ticket  for you.The price is 200 and flight number is 1025. Is it ok for you?
assistant
Yes, book the ticket on my name.
user
I confirmed your ticket successfully.
assistant
Thank you for helping me out.
user
Welcome.
assistant