You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please book me a plane ticket from DFW to LAS?

ASSISTANT: Sure, when are you willing to travel?

USER: I am planning to start on Apr 7th and return on Apr 9th.

ASSISTANT: May I know your name please?

USER: I am Anthony Taylor.

ASSISTANT: Do you have any preferences for this trip?

USER: My return time must be in the afternoon.

ASSISTANT: There is a flight in an airline Spirit with 1001 number having a single connection which returns in the afternoon. Shall I proceed to book?

USER: Fine, please proceed.

ASSISTANT: Your flight ticket has been booked in an economy class.

USER: Thanks for your support.

ASSISTANT: Thank you for reaching us. Have a safe flight.