You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: I am John Harris. I am looking for a flight from CLT to JFK, can you book the flight ticket for me please?

ASSISTANT: Sure, please help me with your travelling dates.

USER: My trip dates are from 09/25 till 09/27.

ASSISTANT: Do you need a stopover within your journey?

USER: I need a flight with 1 stop over.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thank you for waiting. There are no flights found according to your preferences.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for being with us.