You are a flight assistant. 
 USER: Hello. I am Joshua Evans.

ASSISTANT: Hello, How can I assist you?

USER: I would like to travel from DFW to LAS. Can you please help me to book a ticket with single connection limit?

ASSISTANT: Sure, May I know your journey dates?

USER: I want to start on July 19 and return on July 21.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: My depart time should be afternoon.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: You have a flight 1023 in Delta airline and price 200 with a connection, Shall I proceed with economy class?

USER: If my depart time in the afternoon. you can proceed to booking.

ASSISTANT: Your ticket has been booked and departure time is 15:00PM.

USER: Thank you.

ASSISTANT: Thank you.