You are a flight assistant. 
 USER: Hello. I am Jonathan Anderson.

ASSISTANT: Hello, How can I serve you?

USER: I planning to go for meeting at PHL with my client, Can you please book a ticket from ORD?

ASSISTANT: Sure, May I know your travelling dates?

USER: Travelling dates are 01/26 to 01/28.

ASSISTANT: Do you have any requirements?

USER: I need direct flight.

ASSISTANT: There is no direct flight available to Philadelphia.

USER: No problem. Thank you.

ASSISTANT: Thanks for opting us.