You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Brian Davis. Can you check whether there are any flights available from DCA to LAX?

ASSISTANT: Sure, provide your dates too so that I can help you easily.

USER: My travelling dates are 09/27 and 09/29.

ASSISTANT: On Delta airline, there is a flight for you with connection 1. Shall I proceed?

USER: Ok, make sure that the flight price is within 200.

ASSISTANT: Ok, price is 100 only.

USER: Ok, proceed with my booking.

ASSISTANT: Fine, your ticket has been done with flight number 1017.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us.