You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Jack Moore. Can you help me in booking a ticket from LAS to JFK?

ASSISTANT: May I know your travel dates please?

USER: My planning dates are from 04/06 to 04/08.

ASSISTANT: I am sorry no flights found on your details, thanks for choosing us.

USER: It's fine. Anyway, thank you for your help.

ASSISTANT: Most welcome.