You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Dennis Mitchell here. I have a live music concert at New York, please help me in booking a ticket from OAK to EWR.

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travel dates?

USER: My planned travel dates are on June 14 and June 16.

ASSISTANT: Ok, may I know your specifications?

USER: I would like to prefer an economy class.

ASSISTANT: Ok, do you have any other preference?

USER: I would like to return in the morning.

ASSISTANT: Ok, please wait for a while.

USER: Please check the flight with single connection.

ASSISTANT: Sorry, there is no flight available as per your requirements.

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

ASSISTANT: You are welcome and have a nice day.