You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Lee.

ASSISTANT: How could I aid you today?

USER: I am planning to travel from ORD to PHL to explore nature. Can you help me in booking a flight ticket for my journey?

ASSISTANT: Can you please provide your journey dates?

USER: My planned trip dates are Nov 08 and Nov 10.

ASSISTANT: Please provide your specifications.

USER: Price should not exceed 500. I need a halt in between my journey.

ASSISTANT: Unfortunately, there are no flights are running on your route according to your given dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your response.