You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Could you please book me a flight ticket from MSP to IAD?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I will start on Nov 27th and return on Nov 29th.

ASSISTANT: Do you need break in between your journey?

USER: Yes, I need 1 lay by.

ASSISTANT: Please let me know if you have any other specifications.

USER: I am looking for a business class ticket.

ASSISTANT: May I know your good name please?

USER: I am Michelle Smith.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: That's alright, thanks for your response.

ASSISTANT: Thank you for choosing us.