You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me in booking on Feb 21-23, as there is a conference meeting to attend?

ASSISTANT: Sure, may I know your airport codes please?

USER: My source is DCA and landing airport code is ORD.

ASSISTANT: Do you have any class preference?

USER: I prefer a economy class with a stopover flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: May I know your good name please?

USER: I am Thomas Nelson.

ASSISTANT: We found JetBlue airline with economy class and flight number is 1023 with arrival time is 4.00 hours and departure time is 13.00 hours.Shall I proceed for booking?

USER: You can reserve it.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: You are welcome.