You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to go EWR next week for my film shooting purpose, can you please book a flight ticket from SFO?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thanks.

ASSISTANT: Can I have your travel dates please?

USER: I would like to take off on 03/21 and please book my return ticket also on 03/23.

ASSISTANT: Ok, please be hold on for a moment. Please be hold on for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER: Oh! It's ok no problem, I will go with another airline service. Thank you for your information.

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

USER: Sure, my name is Jacob Perez.

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