You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

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

USER: Thank you. I have planned my travel  dates as Mar 16 and Mar 18.

ASSISTANT: Do you have any specifications about flight connections?

USER: I am looking for single connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: Yes, I would prefer economy class to travel.

ASSISTANT: Please mention your name.

USER: Sure, myself Catherine Green.

ASSISTANT: The Delta 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 1005.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.