You are a flight assistant. 
 USER: Hi, I am Rebecca Young.

ASSISTANT: Hello, how may I aid you?

USER: I need to travel to Oakland OAK to attend my granny memorial service. Can you make a reservation from ATL?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, my arrival and departure dates are Aug 22 and Aug 20.

ASSISTANT: Do you have any other requirements?

USER: I need a halt. My price is 5000.

ASSISTANT: Sorry to inform you that, there are no flights found with your requirements.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.