You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kevin Allen.

ASSISTANT: How can I assist you today?

USER: I want to book a ticket from BOS to DEN, can you help me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travel dates are 04/10 and 04/12.

ASSISTANT: Do you have any specifications?

USER: I want to depart in the evening.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: You can book it.

ASSISTANT: Your ticket is booked. The flight number is 1022.

USER: Thank you for booking.

ASSISTANT: Welcome, have a great day.