You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please book a flight ticket from MSP to DEN?

ASSISTANT: Sure, let me know your planned journey dates?

USER: My travelling dates are July 15 and July 17.

ASSISTANT: Do you prefer direct flight  or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Brandon Lewis.

ASSISTANT: We found a American airline with flight number 101 and fare 100 with class is economy. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.