You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Could you please book a flight ticket from BOS to DEN?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: My travelling dates are May 08 and May 10.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: I want to depart in the afternoon.

ASSISTANT: May I know your good name?

USER: I am Helen Allen.

ASSISTANT: We found a connecting flight in Spirit airline with a fare of 100 which departs at 21:00 and return at 13:00. Shall I proceed for booking?

USER: Ok, proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1010.

USER: Thank you.

ASSISTANT: Thank you for availing us.