You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in flight ticket booking process from MSP to SFO?

ASSISTANT: Sure, let me know your travelling dates.

USER: Thank you for your response, I want to take off on Nov 29 and book my return ticket also on Dec 01.

ASSISTANT: Is there any class preference?

USER: I want to travel in business class flight.

ASSISTANT: Do you have any other requirements?

USER: I need 1 break in between my journey.

ASSISTANT: May I know your name please?

USER: Sure, my name is Eric Taylor.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.