You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Larry King. I am planning to conduct a free medical camp in Denver, so please book a flight ticket from DC - IAD to CO - DEN.

ASSISTANT: Sure, please share me your planned journey dates?

USER: My departure day is 07/15, return day is 07/17.

ASSISTANT: May I know your budget for flight ticket?

USER: My budget is 500.

ASSISTANT: Do you want any halt in between your flight journey?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I found a connecting flight 1005 of airline Delta and fare is 100. Shall I proceed with booking?

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been booked on flight 1005.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.