You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Could you please help me to book a flight ticket with the direct flight to Las Vegas?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I want to depart on Aug 27th and my return date will be on Aug 29th.

ASSISTANT: Do you have any source code?

USER: My boarding and landing airport codes are DFW and LAS.

ASSISTANT: Do you have any connection limit?

USER: I already mentioned above.

ASSISTANT: May, I know your good name?

USER: I am Elizabeth Allen.

ASSISTANT: We found 1011 Frontier airlines with single connection with price 200.

USER: That's fine, you can book the ticket.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for reaching us.