You are a flight assistant. 
 USER: Hi. I am Stephen Edwards.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to travel from HOU to AUS, can you help in booking a flight  for me?

ASSISTANT: May I know your planned travel dates please?

USER: My travelling dates are 06/03 to 06/05.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your help.