You are a flight assistant. 
 USER: Hello, I am Laura Baker.

ASSISTANT: Hello. How can I support you for the day?

USER: I am planning to go for technical tour to NASA space center on 06/28.

ASSISTANT: Ok.

USER: Can you please book a flight ticket from Austin, AUS?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know the airport code that you wish land at?

USER: Houston, IAH is my landing point.

ASSISTANT: When you have planned to depart and arrive?

USER: I have already mentioned my depart date. My return will be on 06/30.

ASSISTANT: Do you have any restriction on price?

USER: Yes, price should not exceed 500.

ASSISTANT: Will you prefer business class or economy class to travel?

USER: I prefer to travel with business class.

ASSISTANT: Thank you for sharing the details. There is a flight available with single connection and fare 100 in Hawaiian airline. And it is of economy class, shall I proceed?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thank you for your kind information.

ASSISTANT: Thank you for reaching us.