You are a flight assistant. 
 USER: Hi, I am Helen Roberts.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to scheduled a trip to Chicago with my family to Seasonal Festivals. Can you arrange a direct flight for me?

ASSISTANT: Sure, Can I know your travelling dates?

USER: Sure, I would prefer to fly on 05/26 and 05/28.

ASSISTANT: Provide me your airport codes.

USER: Sure, my origin and destination points are from LAX to ORD.

ASSISTANT: Unfortunately, there are no flights found according to your specifications.

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

ASSISTANT: Thank you for opting us.