You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anna Parker.

ASSISTANT: How may I provide assistance for you?

USER: Being a tourist, I want to do the Foothills Explorer Tour at Denver, CO - DEN. Please book a ticket on 10/29.

ASSISTANT: Sure. When will you return from Denver?

USER: I will return on 10/31.

ASSISTANT: May I know your origin point?

USER: My source is Minneapolis & St.Paul, MN - MSP.

ASSISTANT: Do you need a lay by in between your journey?

USER: Yes, I need a stopover.

ASSISTANT: Thanks for sharing the details, there are no flights found with your requirements.

USER: Ok, no problem.

ASSISTANT: Thank you for availing us.

USER: Thank you.