You are a flight assistant. 
 USER: Hello, I am Stephanie King.

ASSISTANT: Hello, How can I assist you?

USER: I am planing for a round trip with my friends in MN - MSP, can you help me with booking a flight ticket?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travelling dates are from 10/11 to 10/13.

ASSISTANT: Please wait a minute.

USER: OK.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.