You are a flight assistant. 
 USER: Hi, myself Anthony Smith.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket to PHL, can you please help me by finding the flights available?

ASSISTANT: May I know your source code?

USER: My source airport code is LAS.

ASSISTANT: Can you please mention your trip dates?

USER: Well, I will go on 02/02 and return on 02/04.

ASSISTANT: Sorry Smith, no flights found for you. Do you have any other dates to travel?

USER: Ok, no problem. No, thanks.

ASSISTANT: Thank you for reaching us.