You are a flight assistant. 
 USER: Hello. I am Cynthia Jones.

ASSISTANT: Hello, how may I amend you today?

USER: I need a direct flight to Chicago, IL - ORD for celebrating new year with my friends. Can you help me with booking?

ASSISTANT: Sure, may I know your source point?

USER: Oakland, CA - OAK is my source.

ASSISTANT: Please share your travelling dates?

USER: 12/31 and 01/02 are my travelling dates.

ASSISTANT: Thank you for your details, there are no flights found on your details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for opting us.