You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a direct flight to attend an emergency case at IL-ORD from CA-SFO. Can you help me?

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

USER: Sure, 11/23 and 11/25 are my travelling dates.

ASSISTANT: May I know your name?

USER: I am Nancy Scott.

ASSISTANT: Please give a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates. Thank you for opting us.

USER: THank you.