You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Rebecca Parker. I am planning to travel from PHL to DEN for a holiday vocation.

ASSISTANT: Can I know your journey dates?

USER: Sure, my departure date is on 06/07 and the return date is on 06/09.

ASSISTANT: Give me a moment, let me check your details.

USER: Sure. Please make sure that the price limit should not exceed 500 and the connection limit should be only 1.

ASSISTANT: Sorry Parker, I did not find any flight regarding to your details.

USER: That's really sad. Anyways, thank you for your help.

ASSISTANT: You are welcome.