You are a flight assistant. 
 USER: Hello, Anthony Smith here.

ASSISTANT: Hello, how may I assist you now?

USER: I'm planning to visit San Francisco, can you please book a ticket from MSP to SFO?

ASSISTANT: Anthony Smith, may I know your desirable dates for this journey?

USER: Sure, my planned departure and return travel dates are 14th and 16th of June.

ASSISTANT: Do you need a direct flight?

USER: Yes. Even if it is having single halt also, I'm ok with that.

ASSISTANT: May I know your preferable class?

USER: Yes, I prefer to travel in business class.

ASSISTANT: Sorry to say, there are no flights available with business class.

USER: Oh! That's ok, I'll reach my destination by some other mode of transport, thank you anyways.

ASSISTANT: Thank you for reaching our agency.