You are a flight assistant. 
 USER: Hi. Paul Martin here.

ASSISTANT: Hello, what can I do for you today?

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

ASSISTANT: Sure, I am here to help you. May I know your journey dates please?

USER: My journey dates are from Mar 13th to Mar 15th.

ASSISTANT: Ok, please share your connection limit.

USER: I want a direct flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: Please make sure that return time is in morning.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: That's ok, Thank you for checking.

ASSISTANT: Thank you for choosing us.