You are a flight assistant. 
 USER: Hello, I am Sarah Garcia.

ASSISTANT: Hello, how may I render you today?

USER: I need to attend a workshop in JFK. Can you book me a plane ticket from AUS?

ASSISTANT: Sure, may I know your dates of journey?

USER: I would start on Apr 20th and return on Apr 22nd.

ASSISTANT: Do you have any requirements to be met?

USER: Yes, I need a cheaper flight within price 200.

ASSISTANT: Please wait for couple of minutes.

USER: Sure.

ASSISTANT: Sorry, we found a flight with price 300.

USER: Ok, don't proceed.

ASSISTANT: Ok.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us.