You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Hill.

ASSISTANT: How may I help you today, Betty?

USER: I am planning to visit Chicago, can you please help me in booking the flight ticket from JFK to ORD?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: My preferable journey dates are from 10/12 to 10/14.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for choosing us.