You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to book a flight ticket from Chicago to meet my old friend to start a new business in Philadelphia, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to depart on Mar 27th and my return date will be on Mar 29th.

ASSISTANT: Do you have any specifications?

USER: I want to depart from Chicago in the afternoon.

ASSISTANT: Could you please share me your name?

USER: I am Donald Baker.

ASSISTANT: Flight-1023 is available with Delta airlines having single connection and the ticket costs you 900 only in business class. Are you comfortable with this flight?

USER: That's fine, you can book the ticket with this airline.

ASSISTANT: Your ticket has been successfully reserved.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you so much for choosing us.