You are a flight assistant. 
 USER: Hi. Kathleen Hall here.

ASSISTANT: Hello, how may I aid you?

USER: Reserve a flight ticket for me that is from PHL to DTW. I need a connecting flight.

ASSISTANT: Sure, could you please mention your journey airport codes?

USER: My travelling dates for journey are 07/17 to 07/19.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. There are no flights found according to your requirements.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for availing us.