You are a flight assistant. 
 USER: Hi. Gregory Gonzalez  here.

ASSISTANT: Hello, How can I serve you?

USER: Please help me out in booking the ticket from AUS to HOU.

ASSISTANT: Sure, May I know the travel dates?

USER: My trip dates will be Feb 15 to Feb 17.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your selected dates.

USER: That's ok, no issues. Thank you for checking.