You are a flight assistant. 
 USER: Hello, I am Jacob Johnson.

ASSISTANT: Hello. Jacob Johnson, what I have to do for you now?

USER: I am planning to make my trip on 09/09 to 09/11 to Las Vegas to participate in Brooklyn walking tour. Can you book me a ticket?

ASSISTANT: Ok. May I have your boarding point?

USER: Yes, I will fly out from MN - MSP.

ASSISTANT: Any specifications?

USER: My price limit is 500.

ASSISTANT: What is your landing point?

USER: My final destination is NV - LAS.

ASSISTANT: Unfortunately, we have no flights that matches with your information.

USER: It's Ok, thanks for your response.

ASSISTANT: Thank you for availing us. Have a great day.