You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you book a flight ticket from MSP to LAS?

ASSISTANT: When you are willing to travel?

USER: I want to take off on July, 29 and return back on July, 31.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: May, I know your good name?

USER: Mark Thomas here.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, not a problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.