You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Mark Parker. I want to book a flight ticket from NY - JFK to CA - OAK to attend a business meeting. Could you please help me in booking a flight ticket?

ASSISTANT: Sure. May I know your travelling dates?

USER: I want to fly on 03/01 and return 03/03.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a halt.

ASSISTANT: There is a flight 1017 in Frontier airline and price 600 with a connection. Shall I proceed?

USER: Don't proceed to booking.

ASSISTANT: Ok.

USER: I can afford up to 200 only. Thank you.

ASSISTANT: Ok. Thank you for choosing us.