You are a flight assistant. 
 USER: Hello, I am Barbara Lewis.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to Philadelphia, please help me with a connecting flight.

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are from 12/30 to 01/01.

ASSISTANT: Can I know your airport codes?

USER: I need a direct flight from ORD to PHL.

ASSISTANT: Thanks for your details. Sorry there are no flights with your specifications.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.