You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I am Stephen King,  willing to travel Philadelphia, PA - PHL to have a trip in PHL. Can you help me to book a flight ticket from Washington DC - IAD?

ASSISTANT: That's nice. I will help you.

USER: Thank you for your positive response.

ASSISTANT: When you are planning to start your journey?

USER: I am planning to start on 11/27.

ASSISTANT: Do you want return flight?

USER: My return to IAD will be on 11/29.

ASSISTANT: Ok. Please hold on for a while, let me check.

USER: Ok, sure. Make sure it should have 1 connection limit.

ASSISTANT: I have found a flight-1027, price is 100 and 1 connection limit. Shall I proceed?

USER: That's good I want a flight with such a requirements.Book it for me.

ASSISTANT: Your ticket has been booked, have a nice journey.

USER: Thank you for your service.

ASSISTANT: Most welcome.