You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Dennis Miller.

ASSISTANT: Ok.

USER: Please reserve me a flight ticket with the fare of 500 to meet my friends at Las Vegas.

ASSISTANT:  Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: I will fly from DFW to LAS.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I have planned to travel on 11/20 and 11/22.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Thanks for your precious time. We found Southwest airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: Ok,  please book this ticket.

ASSISTANT: Your ticket has been confirmed with airline number 1002.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.