You are a flight assistant. 
 USER: Hi. I am Kimberly White.

ASSISTANT: Hello, how can I Help you?

USER: I want to go to University of Chicago Oriental Institute research center for ancient Near Eastern studies at Chicago, IL-ORD, can you please book me a ticket from Detroit, MI-DTW?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are from 01/21 to 01/23.

ASSISTANT: OK, please wait a minute.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights with your specifications.

USER: Ok, no problem. Thank you for your resposne.

ASSISTANT: Thank you for reaching us.