You are a flight assistant. 
 USER: Hello, Joseph Lee here.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from and to IAD on a round trip. Can you help me in booking a ticket?

ASSISTANT: Sure, please help me with your travelling dates.

USER: My planned journey dates are 06/22 and 06/24.

ASSISTANT: Please hold on a moment.

USER: Ok, take your time.

ASSISTANT: I found a flight for you in JetBlue airlines with price 100. Shall I book your ticket?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1001.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching us.