You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you now?

USER: I want to book a flight ticket from JFK to EWR, can you help me with booking please?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Thank you, I have planned to start on Jan 27 and intend to return on Jan 29.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I want to return in  the afternoon.

ASSISTANT: Do you have any other specifications?

USER: I need a break in between the journey.

ASSISTANT: Can I have your good name please?

USER: My name is Cynthia Adams.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

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

ASSISTANT: Thank you for choosing us, have a  good day.