You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I am looking for your help in booking my flight ticket from PHL to JFK, can you please do that for me?

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

USER: I want to depart on 07/27 and return on 07/29.

ASSISTANT: May I know your name please?

USER: My name is Benjamin Anderson.

ASSISTANT: Sorry Anderson, there are no flights found on your requested dates. Thank you for approaching us, have a nice day.

USER: No problem, anyway thank you for the information.

ASSISTANT: Thank you.