You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brian Mitchell here.

ASSISTANT: How can I assist you?

USER: I am planning to visit Lady Bird Lake located in Austin with my family. Will you please help me in booking the ticket from SEA to AUS.

ASSISTANT: Ok, please provide your journey details?

USER: My journey dates are from 07/02 to 07/04.

ASSISTANT: ok, please wait a moment.

USER: Please check that price limit of the ticket shouldn't exceed 200.

ASSISTANT: sorry to say, there are no flights had been found on your details.

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

ASSISTANT: Thank you for choosing us.