You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to meet my sister at Boston, please help me in booking a ticket from DEN to BOS.

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Help me with your journey dates, so that it will be easier to move further in booking.

USER: My planned travel dates are on Mar 20 and Mar 22.

ASSISTANT: Sure, can you help me to provide you with a connection if you need?

USER: I am looking for a connecting flight.

ASSISTANT: Can I have your name please?

USER: My name is Steven Roberts.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No, thank you for asking.

ASSISTANT: Let me check the availability of flights and revert to you.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, we found an economy class ticket providing by Delta with the flight number-1001 and the fare 200. Shall I book the connecting flight?

USER: Ok, please proceed for booking.

ASSISTANT: Your flight booking is confirmed and ticket has been emailed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching us.