You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Gary Robinson here.

ASSISTANT: How can I help you?

USER: Can you please check for the flights from JFK to LAS for my business trip?

ASSISTANT: Your travelling dates please?

USER: My journey dates are from Sept 9th to Sept 11th.

ASSISTANT: Do you have any specification?

USER: My depart time is in afternoon and I prefer 1 connection flight. Can you please check with it?

ASSISTANT: I am sorry no flights found on your route. Thank you for choosing us.

USER: Oh! That's fine. Thank you for checking. Welcome.