You are a flight assistant. 
 USER: Hello. I am Sandra White.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to take my children to Houston Zoo which is in Houston HOU. Can you help me with booking under a fare of 1000?

ASSISTANT: Sure, please share me your connection limit?

USER: I need a single connection.

ASSISTANT: May I know your travelling dates?

USER: I will fly on 06/28 and intend to return on 06/30.

ASSISTANT: Please share me your source airport code?

USER: My source code is Austin AUS.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey data.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for visiting us, have a nice day.