You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am David Wright.

ASSISTANT: How can I aid you?

USER: find a flight from LAS to AUS as I have to attend a press conference regarding the financial budget at Austin.

ASSISTANT: Sure David, can I know the travel dates please?

USER: I will be travelling on these dates 02/07 and 02/09.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights on your dates.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.