You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Please book me a flight ticket from BOS to IAD to meet my family.

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

USER: I have planned to travel on Apr 09th and return on Apr 11th.

ASSISTANT: Do you have any specifications about flight connections?

USER: I prefer connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: Economy.

ASSISTANT: Please mention your name.

USER: Ok. Myself Donna Rodriguez.

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

USER: Ok, please book this ticket from me.

ASSISTANT: Your ticket is booked. The flight number is 1019.

USER: Thank you.

ASSISTANT: Welcome, have a great day.