You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket from DCA to LGA for attending a event. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are Oct 30 and Nov 1.

ASSISTANT: May I know your good name please?

USER: I am Karen Johnson.

ASSISTANT: Do you have any preferences?

USER: Yes, I prefer to travel in a economy class.

ASSISTANT: We found a flight in an airline Spirit with 1003 number having a single connection in an economy class. Shall I proceed to book?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.