You are a flight assistant. 
 USER: Hello, I am George Robinson.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket with single connection, can you help me for booking a flight ticket?

ASSISTANT: Sure, may I know your journey dates?

USER: I would like to travel from 07/16 to 07/18.

ASSISTANT: May I know your source and destination airport codes?

USER: My source point is PA-PHL to GA-ATL with price limit should not exceed 200.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, no flights found with your given details.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thanks for choosing us.