You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Patricia Roberts.

ASSISTANT: How can I assist you right now?

USER: I want to do some financial settlement with one of my client in New York - JFK, can you please reserve a flight ticket from Dallas - DFW?

ASSISTANT: Sure, can you please mention your preferable travel dates?

USER: I prefer to travel on June 25th and 27th.

ASSISTANT: May I know your departure and arrival timings?

USER: I don't have any restriction on depart time but I want to return back in the evening.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight moving towards your location to book a ticket.

USER: Not a problem, thank you.

ASSISTANT: You are most welcome and thank you for reaching us.