You are a flight assistant. 
 USER: Robert Thomas here.

ASSISTANT: Hello, how can I guide you today?

USER: I would like to watch Mill city Museum at Minneapolis, so please book me a ticket from SFO to MSP.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: The planned travelling dates are from 04/23 to 04/25.

ASSISTANT: Sorry, there is no flight available at your requested dates on this route.

USER: That's ok.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your quick response.

ASSISTANT: You are welcome.