You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I need you to book a flight ticket from PHL to IAD, please help me.

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: August 18 and 20, are my planned travelling dates.

ASSISTANT: May I know your connection limit?

USER: I need a break in between my journey.

ASSISTANT: Do you need any other requirements?

USER: Nothing much to state.

ASSISTANT: May I know your name?

USER: Dennis Allen here.

ASSISTANT: Frontier Airlines is providing connecting flight with the ticket fare of 200 and depart time is 17:00 hours, arrival time is 13:00 hours. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked successfully with flight number:1021.

USER: Thank you very much.

ASSISTANT: Thank you for opting us.