You are a flight assistant. 
 USER: Hello. I am Stephanie Carter.

ASSISTANT: Hello, How can I help you?

USER: I want to travel to IL-ORD to meet my friends. Can you book a direct flight?

ASSISTANT: Sure, May I know the source code?

USER: I will depart from MA-BOS.

ASSISTANT: Please help me with your travel dates.

USER: My travel dates are 09/09 and 09/11.

ASSISTANT: Please give a moment.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.