You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: Sarah Allen here. I'm planning to visit my client office, please book a ticket from MSP to LAS.

ASSISTANT: Sure, we are perky to help you. In which class would you like me to book your flight ticket?

USER: I prefer business class.

ASSISTANT: Do you have any other requirements?

USER: I want to return on the afternoon in single connected flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: Well, my planned departure and return travel dates are 5th and 7th of January.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure, take your own time.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for choosing us.