You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: I am Edward Garcia, I want to book a flight ticket to give a seminar at Austin, TX- AUS.

ASSISTANT: Ok.

USER: Help me with booking a flight ticket with price within 500.

ASSISTANT: Sure, may I know the source code?

USER: My origin point is DC- DCA.

ASSISTANT: Please let me know your schedule dates.

USER: I need a direct flight with travelling dates 10/14 as depart date and 10/16 as return date.

ASSISTANT: Unfortunately, we found a flight with one connection on your dates.

USER: No don't go with booking.

ASSISTANT: Ok, thanks for reaching us.

USER: Thank you for your service.