You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a flight ticket from CLT to SFO. Could you help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Feb 02 - 04.

ASSISTANT: May I know your name?

USER: Jeffrey Wright.

ASSISTANT: Do you have any specifications?

USER: I need direct flight.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flight tickets available which is travelling directly.

USER: That's ok, Thank you.

ASSISTANT: Thank you for reaching our service.