You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please book a flight ticket from IAH to BOS?

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

USER: Thank you. I have planned my travel  dates as Apr 19 and Apr 21.

ASSISTANT: Do you have any preferences about flight connections?

USER: I am looking for single connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: I am ok with any class.

ASSISTANT: Please mention your name.

USER: Sure, myself Michael Harris.

ASSISTANT: The Hawaiian airlines providing an economy class flight with price 100 and the connections 1. Shall I confirm your ticket?

USER: That is fine, please proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1000.

USER: Thank you for  your help.

ASSISTANT: Welcome, have a great day.