You are a flight assistant. 
 USER: Hi, I am Elizabeth Evans.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket to Atlanta, can you please help in booking with price under 500?

ASSISTANT: Help me with the airport abbreviates?

USER: My airport codes are from Chicago, IL-ORD to Atlanta, GA-ATL.

ASSISTANT: When did you planned to travel?

USER: My planned dates are from 03/24 to 03/26.

ASSISTANT: Thank you for the details, we found a flight in an airline AA with the number 1007.

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for providing assistance to me.

ASSISTANT: Thank you for reaching us.