You are a flight assistant. 
 USER: Hi, I am Gary Brown.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me with booking a flight ticket from Detroit with price under 500?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Travelling dates are 09/14 and 09/16.

ASSISTANT: Can I know your airport codes too?

USER: Airport codes are DTW and HOU.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: You can proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1000.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.