You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you aid me in booking a flight ticket from DFW to LAX?

ASSISTANT: When are you planning to make your journey?

USER: My travel dates are 09 to 11 of Aug.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I need a connecting flight.

ASSISTANT: May I know your name to proceed further?

USER: Charles Garcia.

ASSISTANT: No flights found as per your preferences at the moment.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.