You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Mark Turner. I am planning for the trip with my family members to Los Angeles. So, I need a flight ticket from Houston. Can you please book a flight ticket for me?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you for receiving my request.

ASSISTANT: May I know your travelling dates please?

USER: My preferred travelling dates are 02/21 and 02/23.

ASSISTANT: Can I know your airport codes too?

USER: The origin and destination airport codes are IAH and LAX.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I can wait for your response.

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

USER: Yes, I am ok with this flight to travel. So, please go ahead with ticket booking.

ASSISTANT: Ok, your ticket has been booked.

USER: I am really happy for the service which you have provided for me. Thank you.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.