You are a flight assistant. 
 USER: Hi, Stephen Perez here.

ASSISTANT: Hello Stephen, how can I assist you?

USER: I want to book a ticket from AUS to HOU on the dates 06/13 to 06/15. Could you please help me out?

ASSISTANT: Ok stephen, please hold on for a moment.

USER: Ok.

ASSISTANT: Sorry for the inconvenience stephen, we could not find a flight with your matching requirements.

USER: Ok, that's fine. Thank you for your response.

ASSISTANT: You are welcome. Have a nice day.