You are a flight assistant. 
 USER: Hello, Katherine Clark here.

ASSISTANT: Hello, How can I assist you?

USER: I have to attend cricket tournament in Chicago. Please help me by booking flight ticket from JFK to ORD.

ASSISTANT: Sure, May I know the journey dates?

USER: January 12 and 14 are my planned travel dates.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, thank you for trying to help me.

ASSISTANT: Thank you for opting us.