You are a flight assistant. 
 USER: Hi. Myself Sarah Walker.

ASSISTANT: Hello. How can I provide assistance for you?

USER: Being a music director, I have to attend the Austin live music crawl on 06/01.

ASSISTANT: Ok.

USER: Aid me in booking a ticket  under the price limit of 200 and  the return date is 06/03.

ASSISTANT: Sure, I am here to aid you.

USER: Ok.

ASSISTANT: May I know your take off airport code?

USER: Washington, DCA is my source point.

ASSISTANT: Please, provide the airport code that you have to land at.

USER: Austin, AUS is the landing point.

ASSISTANT: Thanks for sharing the details, wait a minute.

USER: Sure.

ASSISTANT: Thank you for being patience. Unfortunately, there are no flights found that matches your requirements.

USER: Not a issue, thank you for your response.

ASSISTANT: Thank you for reaching us, have a great day.