You are a flight assistant. 
 USER: Hi. I am Michael Rodriguez.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a flight ticket from , Minneapolis & St.Paul, MN-MSP  to attend a robotic workshop at Oakland, CA-OAK, can you help me to book an economy class ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Yes, I would like to travel on dates 03/10 and 03/12.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.