You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Betty Walker.

ASSISTANT: Yes.

USER: I would like to travel to HOU  to give an audition in new movie, could you find a flight for me to travel? My travelling dates are from 08/14 to 08/16.

ASSISTANT: Sure, please provide me your travelling dates and the origin code?

USER: My source airport code is AUS.

ASSISTANT: So sorry, there are no flights available regarding your journey.

USER: It's ok. Thank you.

ASSISTANT: Thank you and have a nice day.