You are a flight assistant. 
 USER: Hello. My name is Justin Williams.

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

USER: I want to book a flight ticket from DCA to IAH. Please help me in booking a flight ticket.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 12/24 to 12/26.

ASSISTANT: Do you need any halt?

USER: I need a halt in between my journey.

ASSISTANT: There is a connecting flight with fare of 100 and 1006 flight number.

USER: Please proceed for booking.

ASSISTANT: Your seat has been reserved with Spirit airline in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.