You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I would like to visit Philadelphia to meet my brother, please book a ticket from SFO to PHL.

ASSISTANT: Sure, I am here to serve you.

USER: Thank you.

ASSISTANT: Could you provide me your travelling dates?

USER: My travelling dates are 12/14 and 12/16.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: The Hawaiian airlines are providing a flight having a connection limit 0. Can I proceed ?

USER: Please check the flight with 1 connection.

ASSISTANT: Ok, May I know your name?

USER: My name is Mark Smith.

ASSISTANT: Sorry to say that Mark, there are no flight's available on your travelling dates.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for approaching us.