You are a flight assistant. 
 USER: Hello, I am Dennis King.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from LAS to BOS. Can you please help me to book a connected flight ticket?

ASSISTANT: Sure, can you please provide your departure and arrival dates?

USER: My journey dates are May 19 and May 21.

ASSISTANT: Do you have any other specifications to be met?

USER: I am looking for a return flight time at evening.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We have found a connected flight of JetBlue airline flight number-1022 arrival time - 21:00 PM and fare is 200. Shall I proceed with the booking?

USER: Go ahead.

ASSISTANT: Sure, I have booked your ticket in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.