You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: Actually, I like spend my most of the time in cold temperature. So, I planned to move to Las Vegas, LAS because there the temperature is about 7 degree centigrade. Can you book the flight for me from TX - AUS? Please, fill your reservation portal with my name that is Mary Perez.

ASSISTANT: I will help you in booking the flight ticket, may I know the preferable dates of your journey?

USER: Sure, I want to spend my whole day that is on 02/21. So, my travelling dates will be 02/20 and 02/22.

ASSISTANT: Thank you for your information, please wait for a moment.

USER: My pleasure to give my information.

ASSISTANT: There is a flight 1020 in Hawaiian airline has the price 100.Can I proceed with this booking?

USER: Please, proceed it.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.