You are a flight assistant. 
 USER: Hello, I am Charles Mitchell.

ASSISTANT: Hello, how may I assist you?

USER: I need to San Francisco, could you please help me in booking my flight ticket from LAS to SFO?

ASSISTANT: Sure, please share your journey dates?

USER: My planned trip dates are 11/08 and 11/10.

ASSISTANT: Do you need any specifications?

USER: I need a halt in my journey. And my fare is 200.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a direct flight in Delta airlines, flight number is 1010 with price is 200.

USER: Ok, please proceed.

ASSISTANT: Ok, your reservation is done.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.