You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Please assist me in booking a ticket from LAX to IAH, as I need to attend a basketball match in Houston.

ASSISTANT: Sure, may I know your trip dates?

USER: My preferable journey dates are from 05/21 to 05/23.

ASSISTANT: According to your dates, there is a flight available with Frontier airlines, shall I proceed your booking?

USER: Please book the ticket with the name of Alexander Green.

ASSISTANT: Sure. Your ticket has been booked with flight number 1003. Thanks for contacting us.

USER: Thank you for your help.

ASSISTANT: It's my pleasure.