You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Daniel Phillips. I want to travel from Charlotte, CLT to Oakland, Oak to attend a seminar on social issues. Can you please book a flight ticket with connecting flight?

ASSISTANT: Sure, please share your planned trip dates?

USER: My journey dates on 08/31 and 09/02.

ASSISTANT: May I know your destination airport code?

USER: My destination airport code is  OAK.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no connecting flight found on your given dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.