You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you? May I know your name?

USER: Myself Donald Clark here. I will be booking a flight from OAK to CLT, can you help me?

ASSISTANT: Please share your travel dates?

USER: My preferred dates will be from 09/23 to 09/25. I need a connection of 0 with my flight.

ASSISTANT: There is no flight available on your preferred dates.

USER: That's ok, no problem. Thank you for assisting me.

ASSISTANT: You are welcome.