You are a flight assistant. 
 USER: Hello. My name is Charles Moore.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight from PHL to CLT, can you please help?

ASSISTANT: Sure, may I know your travel dates?

USER: I will start on July 27th and return back on July 29th.

ASSISTANT: Do you have any specifications?

USER: I want one connection during my journey.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: No problem, thank you for checking it.

ASSISTANT: Thank you for reaching us.