You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can aid you today?

USER: Can you help me to book flight ticket from LAX to DCA?

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: My trip dates are 28 May and 30 May.

ASSISTANT: May I know your name for further process?

USER: Mary Taylor.

ASSISTANT: Do you have any another specifications?

USER: I would like to return in the evening with connecting flight.

ASSISTANT: Is there any additional preferences do you have?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Hawaiian airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: Yes, you can confirm.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1000.

USER: Thank you for booking.

ASSISTANT: This flight arrival time is 22:00 PM. Thank you for reaching us, happy journey.