You are a flight assistant. 
 USER: Hi. Robert Carter here.

ASSISTANT: Hello Carter, how can I guide you today?

USER: Can you book a direct flight to Chicago for my business trip?

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: Please tell me your airport codes.

USER: My airport codes for boarding the flight are ATL to ORD.

ASSISTANT: May I know your preferred dates of journey please?

USER: My preferable dates for travel are 07/26 to 07/28.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: I found a direct flight 1023 of AA airlines for you with price 100, can I book?

USER: I am ok with the fare. You can book it.

ASSISTANT: Carter, I confirmed your ticket successfully.

USER: Thank you.

ASSISTANT: Thank you for contacting us.