You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Patrick Brown, can you please help me to book my flight ticket to CLT from SFO?

ASSISTANT: Sure, can you please share your planned trip dates?

USER: Sure, my planned trip dates are 10/22 and 10/24.

ASSISTANT: Please wait a moment, Brown.

USER: Sure.

ASSISTANT: Brown, no flights has been found on your travel dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for approaching us.