You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am looking for a direct flight to reach St.Paul city. Can you book a flight for me?

ASSISTANT: Sure, I am here to help you. Can you please share your trip dates?

USER: I will travel on 27 June and return on 29 June.

ASSISTANT: May I know your airport codes?

USER: My source airport is LGA and destination is MSP.

ASSISTANT: May I know your name?

USER: My name is Ronald Young.

ASSISTANT: Is there any preferences?

USER: Yes, I would like to travel in business class.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.