You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you?

USER: I am John Lewis. I would like to book a flight ticket to Denver to enjoy the scuba driving in this holiday, can you please help me?

ASSISTANT: Sure, we are here to make your journey easy. May I know your source and destination airport codes?

USER: Sure, I will depart from IAD and land at DEN.

ASSISTANT: Please share your planned travelling dates?

USER: I will start on 10/03 and return back on 10/05.

ASSISTANT: Do you need any halt with in the journey?

USER: Yes, I will prefer a stopover in between my journey.

ASSISTANT: How much can you spend in booking your flight ticket?

USER: I can pay up to 200.

ASSISTANT: We are happy to inform you that we found a flight 1000 in UA airline the price is 100 with one halt. Shall I go ahead with booking?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for making us to serve you.