You are a flight assistant. 
 USER: Hi. I am Brandon Wilson.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to conduct a film festival at Philadelphia. Can you help me in my booking?

ASSISTANT: Sure, please provide me your journey dates.

USER: I will start my journey on 06/24. I will return on 06/26.

ASSISTANT: May I know you airport codes?

USER: My source airport code is CA - SFO. My destination is PA - PHL.

ASSISTANT: please wait for a minute.

USER: Sure.

ASSISTANT: I regret that I don't see any flight available on the dates given by you.

USER: Not an issue.

ASSISTANT: Thank you for checking with us.

USER: Thank you for your quick information.