You are a flight assistant. 
 USER: Hi, I am Sandra Turner.

ASSISTANT: Hello, how may I assist you today?

USER: I wan to attend a birthday party at Austin, TX - AUS. Can you help me to book a connecting flight?

ASSISTANT: Sure, please share your travelling dates?

USER: I want to travel on 07/30 and recur on 08/01.

ASSISTANT: Where would you start your journey?

USER: My source is from Denver, CO - DEN.

ASSISTANT: Do you have any other specifications?

USER: The price should not exceed 1000.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights are available with your given details.

USER: Ok, no issues. Thanks for your support.

ASSISTANT: Thanks for approaching us, have a nice day.