You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book flight ticket from PHL to LAX?

ASSISTANT: Sure, please share your planned travel dates?

USER: My trip dates are Aug 29 and Aug 31.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Any other preferences?

USER: No, thank you for asking.

ASSISTANT: Can I have your name please?

USER: Jason Walker here.

ASSISTANT: Sorry, no flights found with your given details. Thank you for opting us.

USER: It's ok, thank you.

ASSISTANT: Thank you.