You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Please help me to book a flight ticket from IAD to AUS.

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: May I know your travelling dates, please?

USER: My travelling dates are from Jan, 28 to Jan, 30.

ASSISTANT: Let me know about your connection limit, please.

USER: I need a single connecting flight.

ASSISTANT: May I know your class preference?

USER: I prefer an economy class.

ASSISTANT: Do you have any more specifications?

USER: I need to return in the morning.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with any airlines.

ASSISTANT: Let me know your name, to proceed further.

USER: I am Cynthia Wilson.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Delta airlines is providing you the connecting flight in economy class, which departs at 5 AM and arrives at 10 AM. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved with flight 1017 and with a price of 100.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us, have a safe journey.