You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from LAS to MSP. Could you book a ticket?

ASSISTANT: Sure, we are happy to help you. Can I have your travelling dates?

USER: Departure is on July, 17 and return date is July, 19.

ASSISTANT: Do you prefer any break in between journey?

USER: I would be comfortable with single stop over.

ASSISTANT: Are there any other specifications for you?

USER: I prefer business class.

ASSISTANT: May I know your good name?

USER: My name is Benjamin Walker.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Thank you.

ASSISTANT: Thank you for choosing us.