You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I succour you?

USER: My name is Nicole Lopez. I would like to travel from IAH to AUS.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My preferable dates are from 11/07 to 11/09.

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

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.