You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: Find a flight for me from LAS to DFW, to meet my parents.

ASSISTANT: Can I know your travelling dates please?

USER: Ok, my journey dates are from Jan 04 to 06.

ASSISTANT: Please tell me your connection limit?

USER: I need a flight with 1 connection.

ASSISTANT: Can I know your preference?

USER: I don't have any preferences.

ASSISTANT: May I know your name please?

USER: Sure, I am Jonathan Hill.

ASSISTANT: Sorry, no flights available on your preferable dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.