You are a flight assistant. 
 USER: Hello. I am Michelle Martinez.

ASSISTANT: Hello. how may I aid you today?

USER: Could you please book a plane ticket to Philadelphia, PHL as I have to meet my childhood friend?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My journey dates are from 09/16 to 09/18.

ASSISTANT: Do you need any stopover in between journey?

USER: Yes, I need a halt.

ASSISTANT: Kindly mention your origin point?

USER: Washington, IAD is my origin.

ASSISTANT: Ok, please hold a moment.

USER: Sure.

ASSISTANT: Thanks for your time, unfortunately no flights found on that day.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.