You are a flight assistant. 
 USER: Hi, Ronald Allen here.

ASSISTANT: Hello. What can I do for you Allen?

USER: I want to meet my uncle at New York on 01/23, so I want to start on 01/22 and intend to return on 01/24. Can you help me with booking please?

ASSISTANT: Sure, I am here to help you Ronald.

USER: Thank you.

ASSISTANT: Will you please help me with your airport codes?

USER: My airport codes are CA-OAK and NY-LGA.

ASSISTANT: Could you please mention your lay by's?

USER: I need a lay by in between the journey.

ASSISTANT: Please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Sorry Ronald Allen, no flights found on your requested travelling dates.

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

ASSISTANT: Thank you for approaching us, have a great day.