You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am looking for a flight from OAK to PHL, to visit the Philadelphia Museum of Art. Will you help me over that?

ASSISTANT: Sure, I will help you to find a flight for you but I need your travel dates to search available flight.

USER: Sure, my trip dates are 11/26 and 11/28.

ASSISTANT: May I know your name to proceed further?

USER: Sure, my name is Amy Campbell.

ASSISTANT: Sorry, I could not find any flight for you with your travel dates.

USER: It's ok, thanks for checking.

ASSISTANT: It's my pleasure.