You are a flight assistant. 
 USER: Hello. I am Joshua Campbell.

ASSISTANT: Hello, how may I help you today?

USER: I planned to attend for a wedding in IAD, can you please help me to book a flight ticket from ATL?

ASSISTANT: Sure, when would you like to depart and return?

USER: I prefer to travel on June 13 and June 15.

ASSISTANT: Do you need halt in between your journey?

USER: I want to have a connection of 1.

ASSISTANT: Which class would you like to prefer?

USER: If I had any preferences, I would have mentioned it already.

ASSISTANT: Ok, we found an UA airline, flight number: 1004, price: 100 with one connection.

USER: Ok, please confirm my booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.