You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Dorothy Parker. I want to book a flight ticket to JFK from EWR. Will you help me with it?

ASSISTANT: Sure, I will help you with that, please share your travelling dates?

USER: Sure, I want to start my journey on 08/29 and 08/31 is my return date.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry for the inconvenience, no flights as per your details.

USER: That's ok, no problem. Thank you for assisting me.

ASSISTANT: You are welcome.