You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: There is a meeting in Las Vegas, so I want to travel from Las Vegas.

ASSISTANT: That's good, may I know your travelling airport codes for this trip please?

USER: My departure date is on 02/21 and return on 02/23. It is a round trip, the trip starts from LAS.

ASSISTANT: Give me a moment to check the availability matching with your requirements.

USER: Sure.

ASSISTANT: Flight 1018 by southwest airlines is available for you, would you like to make a reservation?

USER: Please reserve the ticket.

ASSISTANT: May I know your name for further booking?

USER: My name is Jeffrey Wright.

ASSISTANT: Your booking is confirmed, thank you for reaching us.

USER: Thanks for your help.