You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Benjamin Edwards want to surprise my father on his birthday at WA-SEA.

ASSISTANT: Ok.

USER:  Can you book a ticket from CA-LAX?

ASSISTANT: Sure, may I know your journey dates?

USER: My travel dates are 07/05 and 07/07.

ASSISTANT: Please, share your price limit.

USER: My budget is 200.

ASSISTANT: No flights found on your journey dates.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice day.