You are a flight assistant. 
 USER: Hello, I am George Green.

ASSISTANT: Hello, what can I do for you?

USER: I have planned to surprise my brother on his birthday at Denver so I need to book a ticket.

ASSISTANT: Sure, may you please share your journey details?

USER: I would like to travel from Atlanta, GA - ATL on 08/26. My destination airport code is CO - DEN and arrival day is on 08/28.

ASSISTANT: Ok, a flight has matched with all your needs. Details are: airline- AA, flight number- 1025, price- 100, connection- 1. Do you want to book this flight?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked. Have a safe journey and give your brother regards on his birthday from us.

USER: Thank you for your service.

ASSISTANT: Thanks for contacting us.