You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Carolyn Taylor. Can you please book a flight ticket for round trip on 02/21?

ASSISTANT: Sure. Can you share me your source point and destination point?

USER: As it is a round trip, Las Vegas, LAS is my airport code.

ASSISTANT: May I know your return date?

USER: My return will be on 02/23.

ASSISTANT: Ok, wait for a moment.

USER: Sure.

ASSISTANT: We found Spirit airline with connecting flight and number 1017 fare of 100. Shall I confirm it?

USER: Yes, you can.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for assisting me.

ASSISTANT: Thanks for approaching us.