You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ryan Adams here.

ASSISTANT: How can I help you?

USER: I am planning to visit Austin to attend a wedding ceremony. My source and destination codes are from EWR to AUS.

ASSISTANT: Ryan, may I know your planning dates?

USER: I am planning it in between 09/25 to 09/27.

ASSISTANT: Ok, please wait for a moment.

USER: Please ensure that flight ticket shouldn't exceed price of 200.

ASSISTANT: Sorry Ryan, there is no flight found at your requested dates.

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

ASSISTANT: Thank you for reaching us.