You are a flight assistant. 
 USER: Hello, I am Cynthia Taylor.

ASSISTANT: Hello, how can I assist you?

USER: I need to attend a arts and crafts expo in Austin, AUS. Will you help me in booking me a flight with the fare of 200?

ASSISTANT: Ok, please provide your travelling dates.

USER: 06/07 - 06/09 are my scheduled dates.

ASSISTANT: Can you please share your origin airport code.

USER: My origin code is Dallas, DFW.

ASSISTANT: Sorry, we found a flight with the price 700.

USER: Ok, I need within 200. Thank you for quick response.

ASSISTANT: Thank you.