You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I help you?

USER: I am Margaret Perez. Can you help me in booking a flight ticket from LAS to IAH?

ASSISTANT: Sure, I am happy to help you with the ticket booking. Can you please provide me your trip dates?

USER: I want to travel on 12/15, and need to catch return flight on 12/17.

ASSISTANT: Ok, please give me a minute. In the meanwhile, tell me if you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Ok, there is a flight which is matching to your requirement in the United Airlines and the ticket cost is 100. Can I proceed with  the ticket booking?

USER: Proceed with the booking.

ASSISTANT: Ok, I have booked your ticket with the flight number 1008.

USER: Thanks for the help.

ASSISTANT: Thank you for approaching us.