You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Myself Eric Roberts, can you please help me to book my flight ticket from JFK to OAK?

ASSISTANT: Ok, may I know your travel dates to book?

USER: Sure, I will depart on 12/17 and return back on 12/19.

ASSISTANT: Please wait a moment while I check.

USER: Sure.

ASSISTANT: Sorry, there is no flight available at the moment.

USER: That's ok, not problem. Thank you for checking.

ASSISTANT: Thank you for connecting with our agency.