You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Find a flight for me from DEN to DFW, to meet my school teacher.

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: Ok, my trip dates are from June 03 to 05.

ASSISTANT: May I know your name please?

USER: Sure, I am Stephen Hill.

ASSISTANT: Are you looking for any other specifications please?

USER: I need a direct flight.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Hill, there is no flight found as per your travelling details.

USER: It's ok, thanks for checking.

ASSISTANT: You are welcome.