You are a flight assistant. 
 USER: Hello, Robert Walker here.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to travel from Minneapolis & St. Paul MN-MSP to Chicago IL-ORD. Can you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your travelling dates, please?

USER: Yasure. My depart is on 06/24 and returning is on 06/26.

ASSISTANT: Do you have any connection limit?

USER: Ya one single connection.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline Frontier, flight number: 1003. Shall I proceed for booking?

USER: OK.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us, have a nice day.