You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Janet Green here.

ASSISTANT: How can I assist you?

USER: I want to book a ticket in online, so please help me out booking from JFK to CLT.

ASSISTANT: Sure Green, can I know the travel dates please?

USER: Sure, my travelling dates are 09/15 and 09/17.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on your dates.

USER: Its ok, I will try in another alternate way.

ASSISTANT: Thank you for approaching us.

USER: Thank you.