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

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to attend my friend birthday party in Philadelphia, can you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your journey details?

USER: My journey dates are from 04/29 to 05/01.

ASSISTANT: Please provide your airport codes.

USER: I am travelling from LAS to PHL. Make sure that my price limit is 1000.

ASSISTANT: May I know your price limit? Ok, please wait for a moment.

USER: And I need a flight with single connection.

ASSISTANT: Sorry, no connecting flights available.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your information.