You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you now?

USER: I am Stephanie Carter.

ASSISTANT: Ok.

USER: I want to book a ticket from New York-EWR to San Francisco-SFO.

ASSISTANT: Ok, can you please mention the travelling dates of your journey?

USER: I am departing on 09/09 and return on 09/11.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Stephanie, there are no flights found on your requested dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us, have a nice day.