You are a flight assistant. 
 USER: Hi, Jeffrey Robinson here.

ASSISTANT: Hello, How can I serve you?

USER: Can you serve me a flight ticket, within the fare 500, in a direct flight?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your starting date of  journey?

USER: I want to start on 12/03.

ASSISTANT: Can you share me your air port codes?

USER: Boarding is from Austin, AUS and landing on New York, LGA.

ASSISTANT: When are you willing to coming back?

USER: I will catch return flight on 12/05.

ASSISTANT: There is a flight 1008 in Frontier airline and price 100 with a connection. Shall I proceed?

USER: I am comfortable with that, proceed for booking.

ASSISTANT: Your reservation is done.

USER: Thanks for your service.

ASSISTANT: Thank you.