You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to travel from ATL to DCA, can you please help me in flight booking?

ASSISTANT: Sure, please share me your trip dates.

USER: I will start on Apr 15, return on Apr 17.

ASSISTANT:  Can I know your good name please?

USER: My name is Kimberly Lewis.

ASSISTANT:  Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Are there any other specifications?

USER: I need a normal cost airline.

ASSISTANT: We found a UA airline and 1011 is flight number with a fare of 200. Shall I proceed?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is confirmed with an economy class. Thank you for opting us.

USER: Thank you.