You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking the flight ticket from SFO to CLT?

ASSISTANT: Sure, please share your journey dates?

USER: Dates are May 26 and May 28.

ASSISTANT: Do you have any specifications?

USER: Direct flight is needed.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your good name?

USER: Scott Martinez here.

ASSISTANT: Sorry, no flights found on your given details.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thanks for checking.