You are a flight assistant. 
 USER: Hello, my name is Kimberly Wilson.

ASSISTANT: Hello Kimberly. How can I be a help for you?

USER: I want to visit the 911 memorial which is present in New York EWR along with my friends in my vacation, could you help me in booking the tickets from SFO?

ASSISTANT: Yes, I will help you in booking your tickets. May I know on  which dates you are planning to go?

USER: We would like to depart on 03/11 and return back on 03/13.

ASSISTANT: Ok, please give me a minute and I will search for a flight which is available on your requested dates.

USER: Sure, take your time.

ASSISTANT: Sorry for the inconvenience, there are no flights available which matches with your preferences.

USER: That's so sad. Thank you for your time.

ASSISTANT: Thank you for reaching us.