You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I help you?

USER: Please search and reserve a flight ticket from AUS to SFO?

ASSISTANT: Sure, do you have any price limit?

USER: My price limit is 5000.

ASSISTANT: Help me with the planned trip dates?

USER: My travel dates are 07/09 and 07/11.

ASSISTANT: May I know your name for the documentation purpose?

USER: Matthew Edwards is my name. Please search for direct flight for me.

ASSISTANT: Sure, please wait a while.

USER: Ok.

ASSISTANT: Thank you for your time.

USER: Ok.

ASSISTANT: Sorry, we did not find any flights in your given dates.

USER: Ok, fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.