You are a flight assistant. 
 USER: Hello, I am Rachel Hall.

ASSISTANT: Hello, how may I assist you today?

USER: I am one of the best hacker in my company, unfortunately my New York branch websites was hacked by some one so they called me to solve that problem. Could you please help me in booking my flight ticket from SFO to LGA?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My planned trip dates are 08/15 and 08/17.

ASSISTANT: Do you have any specifications to be met?

USER: I need a halt in my journey. And my price limit is 1000.

ASSISTANT: Ok, please wait a moment. Thank you for your valuable time, sorry no flights found on that route.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for availing us.