You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Ronald Hernandez, I am planning to attend business meeting at Los Angeles, LAX  from PHL. Can you help me to book a ticket?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travel dates are on 12/03 and 12/05.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, thank you for response.

ASSISTANT: Thank you for opting us.