You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: Can you please help me in reserving my flight from OAK to reach JFK?

ASSISTANT: Sure, may I know your good name please?

USER: Thank you, my name is Brandon Roberts.

ASSISTANT: On which dates would you like to travel?

USER: My travelling dates are June 19th and June 21st.

ASSISTANT: Do you need a stop over in between the journey?

USER: I prefer a direct flight for my journey.

ASSISTANT: Do you have any other requirements?

USER: I don't have any other requirements.

ASSISTANT: There are no flights on your requested dates.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.