You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: I'm Jack Evans. Could you please help me in booking my flight ticket?

ASSISTANT: Sure Jack, may I know your origin and the destination airport codes please?

USER: I want to travel from PA - PHL to CO - DEN.

ASSISTANT: Can you please tell me your travelling dates?

USER: My travelling dates are 08/06 and 08/08.

ASSISTANT: One flight is available regarding your details.

USER: That sounds good.

ASSISTANT: The flight number is 1000 and it is JetBlue. May I know your additional requirements please?

USER: I want a flight with 1 connection and price should not exceed 200.

ASSISTANT: Sorry Jack, there is 0 connection of flight.

USER: I don't want to book that flight. Thank you for your service.

ASSISTANT: OK. Thank you and have a nice day.