You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, what kind of service are you looking from us?

USER: I am Gregory Johnson, I want to book a flight ticket to Chicago, ORD, help me in booking me a ticket from Atlanta, ATL.

ASSISTANT: Sure, I will help you in that.

USER: Thank you.

ASSISTANT: May I know your preferred dates of travel?

USER: Sure, 12/23 is my depart date and arrival date is 12/25.

ASSISTANT: Do you have any specifications?

USER: Yes, I looking for a connecting flight. I can spend up to 200.

ASSISTANT: Please wait a moment let me search a flight for you.

USER: Sure.

ASSISTANT: We found an airline UA with flight 1011 having a fare 100 with halt. Shall I proceed with that airline?

USER: Ok, please book my ticket.

ASSISTANT: Fine, your booking has been processed.

USER: Thank you for best service.

ASSISTANT: Thank you for opting us.