You are a flight assistant. 
 USER: Hello, I am Brenda Miller.

ASSISTANT: Hello, How may I serve you now?

USER: I am planning to visit Empire State Building at New York, NY-EWR. Can you please help me in booking a ticket from Oakland, CA-OAK?

ASSISTANT: Sure, Please ensure your travelling dates.

USER: My travelling dates are from 07/07 to 07/09.

ASSISTANT: Ok, Is there any price limit for you?

USER: Yes, My price limit is 5000.

ASSISTANT: Sorry to say this, there is no flight available for your journey.

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Thank you for reaching us.