You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me to book a flight ticket from LAS to DEN?

ASSISTANT: Sure, I am happy to help you. When are you planning to make your journey?

USER: My travelling dates are 12 and 14 of Nov.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: I prefer to travel in economy class.

ASSISTANT: May I know your good name?

USER: I am Frank White.

ASSISTANT: Thanks for providing details, there is a connecting flight found in Southwest airline with a fare of 100 and the flight number is 1021. Shall I proceed for booking?

USER: That's perfect, proceed to booking.

ASSISTANT: Ok, your ticket is reserved in an economy class.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.