You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Dorothy Clark, I like to do mountain biking at Atlanta. Help me to find the flight with one connection.

ASSISTANT: Sure, when do you want to travel?

USER: I will fly on 10/21 and return on 10/23.

ASSISTANT: Ok, could you help me with your airport codes please?

USER: My destination is Atlanta GA-ATL from PA-PHL.

ASSISTANT: Any specific price limit? Ok, please wait for a moment I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any flights with your specified details.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us.