You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Joshua Campbell. I am planning to visit a new please at JFK. Can you please help me out to book a ticket from LAX?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: I am planning to take off flight on 12/26 and return back on 12/28.

ASSISTANT: Give me a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for reaching our agency.