You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Jonathan Carter. I would like to attend workshop at Chicago, can you please help me to book a flight ticket from MSP to ORD?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: Sure, my journey dates are Mar 26 and Mar 28.

ASSISTANT: Do you have any other specifications?

USER: My return time is evening.

ASSISTANT: Give me a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.