You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Elizabeth Gonzalez here. I want to book a flight ticket from OAK to DEN. Can you find a flight ticket for me?

ASSISTANT: Sure, could you please share your travelling dates?

USER: Sure, my itinerary dates are 02/12 and back on 02/14.

ASSISTANT: Ok, please give me a moment.

USER: Ok, make sure that the connection limit 1.

ASSISTANT: Sorry, no flight is available for you.

USER: Ok, no problem. Thank you for your information.

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