You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please book a flight ticket from LAS to AUS.

ASSISTANT: Sure, please share your journey dates?

USER: My trip dates are 05/20 and 05/22.

ASSISTANT: Do you have any specifications?

USER: I am comfortable to travel in a single connecting flight.

ASSISTANT: May I know your good name?

USER: Jonathan Thomas here.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: We found a flight in Spirit airlines, flight number is 1007 with single connection and price is 800 business class. Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.