You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: Can you please book a flight ticket from OAK to LGA?

ASSISTANT: Sure, May I know the travelling dates?

USER: My trip dates are 02/21 and 02/23.

ASSISTANT: Do you have any connection limit?

USER: I am comfortable to travel in a single connecting flight.

ASSISTANT: Is there any other requirements?

USER: No, thanks for asking.

ASSISTANT: May I know your name?

USER: Shirley Mitchell here.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for opting us.