You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I best serve you today?

USER: I would like to book a ticket from LGA to DCA, can you please help me with that?

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: The travel dates are from 02/14 to 02/16.

ASSISTANT: Do you like to go with a connecting or direct flight?

USER: No, but I prefer economy class.

ASSISTANT: Can I know your good name to proceed further?

USER: Mark Roberts here.

ASSISTANT:  There is a flight in American Airlines with the ticket price of 200 having one connection and economy class. Can I proceed to booking?

USER: Please proceed.

ASSISTANT: Your booking is confirmed and the flight number is 1015.

USER: Thank you.

ASSISTANT: Thank you for choosing us.