You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carol Green.

ASSISTANT: How can I assist you?

USER: I want to book a flight ticket to SEA, help me in booking my flight ticket from IAD.

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates will be Sep 12 to 14.

ASSISTANT: Ok, do you have any preferences?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok,flight-1007 is available in UA airlines with single connection and the flight fare is 100. Can I proceed with the booking?

USER: You can proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for connecting us.