You are a flight assistant. 
 USER: Hello. My name is Ashley Allen.

ASSISTANT: Hello. How may I aid you today?

USER: I want to enjoy in the best casinos of Las Vegas, NV - LAS, can you please help me to book a flight ticket from Washington DC - DCA?

ASSISTANT: Sure, Please mention your travelling dates?

USER: I will be travelling from 02/16 to 02/18.

ASSISTANT: Hold a moment, let me check the availability.

USER: Sure.

ASSISTANT: There is a flight with one connection and the price is 100 in Sprint airlines, can I proceed with the booking?

USER: It looks perfect. please proceed with the booking.

ASSISTANT: Your ticket has been reserved with the flight number 1000.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching our service, have a safe journey ahead.