You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me to book a flight from MSP to LAS?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I want to travel on Sept 9 and need to return on Sept 11.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am looking for a flight with single connection.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: Myself Stephanie Carter.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: My return time must be in the afternoon.

ASSISTANT: There is a connecting flight 1000 in Frontier airlines at the price of 800 with business class. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.