You are a flight assistant. 
 USER: Hello. I am Rebecca Allen.

ASSISTANT: Hello, how may I address you today?

USER: I need a direct flight to see my grandmother because she is in critical condition, so please book a flight from DTW to MCO.

ASSISTANT: Sure, please share your travelling dates?

USER: Sure, I have to go on 12/12 and intend to back on 12/14.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your specified details.

USER: Ok, no issues. Thank you for your time.

ASSISTANT: Thanks for contacting us.