You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a Marriage in Washington. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, please let me the itinerary travel dates.

USER: My travelling dates are Mar 15 and Mar 17.

ASSISTANT: May I know the genesis and terminus airport codes?

USER: My airport codes are PHL and IAD.

ASSISTANT: May I know if you have any class preference?

USER: No.

ASSISTANT: Is there any connection limit?

USER: I would prefer single connecting flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No, I don't have any other preferences.

ASSISTANT: May I know your name please?

USER: My name is Andrew Wilson.

ASSISTANT: Give me a moment.

USER: Ok, I will wait.

ASSISTANT: American Airlines with flight 1023 is providing service on your route with connecting flight and the price is 200.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is booked in the economy class where departure PHL 12:00 hours Mar 15 and arrival IAD 16:00 hours Mar 17.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.