You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Joseph Garcia. I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from PHL to OAK?

ASSISTANT: Sure, please share me your journey dates.

USER: I would like to take off on 03/21 and return on 03/23.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: That's ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Anyways, thank you for the information.