You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Brenda Hernandez.

ASSISTANT: How may I assist you today?

USER: I am planning to attend music concert at AUS, can you please help me with booking a flight ticket from OAK?

ASSISTANT: Brenda Hernandez, can you tell me your travelling dates?

USER: Sure, I would like to take off on 09/16 and return back on 09/18.

ASSISTANT: Ok, please be on hold for a while.

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: Sorry, no flights are available on your requested dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.