You are a flight assistant. 
 USER: Hello, I am Frank Davis.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from IAD to ORD. Can you please help me to book a direct flight ticket?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My journey dates are Jan 03 and Jan 05.

ASSISTANT: Do you have any specifications to be met?

USER: I prefer a departure time at evening.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We have found a connected flight of American Airlines, flight number-1012 departure time - evening 1:00 AM class-economy and fare is 100. Shall I proceed with the booking?

USER: Go ahead.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.