You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight from CO - DEN to TX - AUS to attend my cousin sister's marriage.

ASSISTANT: Sure, can you please share your travelling dates?

USER: Sure, my travelling dates from 09/05 to 09/07.

ASSISTANT: May I know your good name please?

USER: My name is Anna Taylor. I need a single connection. My price limit is 500.

ASSISTANT: Do you have any price limit? Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that we have not found any flights with your given details.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thanks for choosing us.