You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Due to some issues I have to reach Los Angels to meet my office partner, so book a ticket on 07/19 and return ticket on 07/21.

ASSISTANT: Yes, I am here to help you. Can you please help me by providing your nearest location airport codes?

USER: Sure, the origin is OAK and destination is LAX.

ASSISTANT: Give me a moment please to check the available flight.

USER: Sure. And make sure that I need a connecting flight in my trip.

ASSISTANT: Ok, I will do it for you. Sure, there are no flights on your planned dates. Can you please provide your name for documentation?

USER: Ok, that's fine. My name is Betty Lopez. Thank you for your help.

ASSISTANT: Thank you for reaching out here.