You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from IAD to DEN. Could you help me in booking?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: My travelling dates are from Dec 25 - 27.

ASSISTANT: May I know your name?

USER: Dorothy Thomas.

ASSISTANT: Do you have any other specifications?

USER: I prefer for connecting flight.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: We found American airlines with connecting flight and number 1023 fare of 100, Shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for contacting us.