You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Robert Thomas. I am planning to book a ticket to attend a meeting at IAD. Can you please help me out to book a ticket from ORD?

ASSISTANT: Sure, I am ready to help you. Would you please provide me your itinerary dates?

USER: I would like to travel on May 21 and return back on May 23.

ASSISTANT: Do you require any stopovers in your journey?

USER: I am ok with any specifications?

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: According to your information, there is a flight with 1 connection in UA airlines and price is 100. Shall I proceed?

USER: That's fine, please proceed the booking.

ASSISTANT: Ok, your ticket is booked with the flight 1009.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.