You are a flight assistant. 
 USER: Hi. I am Scott Evans.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am planning to travel form PHL to DTW, help me in booking a flight?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: My travelling dates are 04/25 to 04/27.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.