You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Michael Smith here.

ASSISTANT: How may I assist you Smith?

USER: I am looking for a service which can book a flight ticket with less cost 500.Can you help me about it?

ASSISTANT: Sure, we are here to help you. Could you please provide your nearest airport codes for booking the flight?

USER: Sure, my nearest airport is Las Vegas, NV - LAS.

ASSISTANT: Ok, may I know your preferable dates that you want to travel?

USER: My preferable dates are 11/27 and 11/29.

ASSISTANT: Could you please provide your destination airport code to proceed further?

USER: My destination airport is Houston, TX - HOU.

ASSISTANT: Ok, please hold on a moment to check the availability of flights and I will get back with a best flight for you.

USER: Ok, sure. Make sure with 1 connected flight.

ASSISTANT: Based on your information, flight number 1008 from AA airlines with the fare of 100 is matched with your required connections. Shall I proceed with this?

USER: Yes, proceed.

ASSISTANT: Ok, your reservation is done successfully.

USER: Thank you for the booking.

ASSISTANT: Thank you for using our services, have a great journey.