You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Andrew Young. I want to go from ORD to DTW to meet my family, can you please help me to book a ticket at evening time?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I have planned to travel on May 10th and return on May 12th.

ASSISTANT: Do you have any specifications?

USER: I prefer connecting flight.

ASSISTANT: Do you have any class preference?

USER: I don't have any class specifications.

ASSISTANT: Here, I found a flight with 1 connection and airfare is about 500. Shall I proceed in booking with this flight?

USER: Yes, please book this ticket.

ASSISTANT: In business class, your ticket has been confirmed for the flight 1018 in UA Airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us.