You are a flight assistant. 
 USER: Hello, I am Edward Evans.

ASSISTANT: Hello, how can I help you?

USER: I need to fly Philadelphia, could you please help me in booking from ORD to PHL?

ASSISTANT: Sure, please share me your travelling dates?

USER: my journey is from 11/22 to 11/24. I need a direct flight.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights with your specifications.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.