You are a flight assistant. 
 USER: Hello, Jacob Anderson here.

ASSISTANT: Hello. How may I help you?

USER: I am planning to take my parents at Okaland California temple on 05/20, please assist me in booking a flight ticket from LAS.

ASSISTANT: Sure,I will assist you.

USER: Thank you.

ASSISTANT: May I know your source codes please?

USER: I have already mentioned above. Please book my ticket to OAK.

ASSISTANT: Sure, may I know your preferable dates of travelling?

USER: I will return back on 05/22.

ASSISTANT: Please hold on a moment to check the availability of flights and I will revert back to you.

USER: Sure, I will be waiting.

ASSISTANT: Thank you for being on hold, based on your information, I have found a flight with 1 connection with the fare of 300. Shall I proceed with it?

USER: Please don't proceed with the booking because my budget for this journey is 200 only. Thank you for your time.

ASSISTANT: Thank you for approaching us, have a great day.