You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to book a ticket from IAD to DFW, can you please help me out?

ASSISTANT: Sure, I will help you. Can you please share your planned travel dates?

USER: I am travelling on these dates June 26th and 28th.

ASSISTANT: Can I have your name please?

USER: Melissa Hill here.

ASSISTANT: Do you need a connecting flight?

USER: I need single connected flight.

ASSISTANT: Do you have any other specifications?

USER: I don't have any other preferences.

ASSISTANT: I found an economy class in JetBlue airlines with fare 200 and it has single connection. Can I book your ticket?

USER: Ok, you can proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1004.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching us.