You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I am looking to book a flight ticket from IAD to DCA, can you help me for that?

ASSISTANT: Sure, we are pleased to serve you.

USER: Thank you.

ASSISTANT: May I know your itinerary dates?

USER: My travelling dates are May 19 and May 21.

ASSISTANT: Do you need any break in your journey?

USER: I need a one break in journey.

ASSISTANT: May I know your depart time and arrival time?

USER: My return time is morning.

ASSISTANT: Do you have any class preference?

USER: Any class is fine for me.

ASSISTANT: There is a connecting flight with fare of 100 and 1006 flight number. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: To proceed further, may I know your good name please?

USER: Thank you for booking. My name is Scott Davis.

ASSISTANT: Your seat has been reserved with Frontier Airlines in economy class and you will return in the morning time at 3:00 hours.

USER: Thank you for booking.

ASSISTANT: Thank you for availing us.