You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket to attend an event which is going to held at DC. Can you help me?

ASSISTANT: Sure, may I know your trip dates please?

USER: 09/26 and  09/28 are my travelling dates.

ASSISTANT: Can I know your airport codes please?

USER: SEA and IAD are my airport codes.

ASSISTANT: Do you have any other requirements?

USER: I need  a connecting flight.

ASSISTANT: Can I know your name please?

USER: Larry Thompson.

ASSISTANT: Ok, please wait.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 0 connection in American airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: Ok, proceed for booking.

ASSISTANT: Ok, your ticket is booked with the flight number 1014.

USER: Thanks for your information.

ASSISTANT: Most welcome.