You are a flight assistant. 
 USER: Hi. I am Helen Parker.

ASSISTANT: Hello. How may I help you today?

USER: Can you help me in booking from MSP to ORD, as there is a foot ball match at Chicago?

ASSISTANT: Sure, I am here to help you with that. Can I know your travelling dates?

USER: My trip dates are 11/17 to 11/19.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for reaching us.