You are a flight assistant. 
 USER: Hello, I am Laura Anderson.

ASSISTANT: Hello, how can I support you?

USER: I would like to travel from ATL to DCA. can you please help me to book a ticket?

ASSISTANT: Sure. May I Know your trip dates please?

USER: My travelling dates will be on 01/04 to 01/06.

ASSISTANT: Do you have price limit?

USER: I have price limit 500.

ASSISTANT: Thanks for the details. I am glad to inform you that, there is a flight available with UA airline, flight number 1000 with fare 100 and a lay by.

USER: You can proceed to  booking.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.