You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to book a ticket from ATL to JFK. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: I would like to travel on Apr 26 and return back on Apr 28.

ASSISTANT: Do you prefer either economy or business class?

USER: I am ok with any class.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: No, I am ok with any timings.

ASSISTANT: May I know your name to proceed further?

USER: My name is Jerry Collins.

ASSISTANT: We don't have any flight available on given dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for connecting us.