You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to take part in Boston marathon, could you book my ticket from Washington DC?

ASSISTANT: Sure, I will help you. May I know your destination airport code please?

USER: My terminus airport code is BOS.

ASSISTANT: Which airport do you prefer in Washington?

USER: My genesis airport code is DCA.

ASSISTANT: When would you like to plan your journey?

USER: My itinerary dates are Aug 9 and 11.

ASSISTANT: May I know your name please to proceed further?

USER: Pamela Collins here.

ASSISTANT: Do you need a connecting flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: I found an economy class in Delta airlines with fare 100 and it is a connecting flight. Can I book your ticket?

USER: Please book my ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1002.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us, have a nice day.