You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jeffrey Hall.

ASSISTANT: Jeffrey Hall, how may I aid you?

USER: I am a travel guider and I have to travel New York to guide the people for two days who are coming with us for two days. So, can you please reserve a flight ticket for me to JFK from my home town DEN city?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Thank you for accepting my request and I have to move that place on April 14th and I will arrival back from JFK on 16th in the same month.

ASSISTANT: Do you have any specifications?

USER: I have planned to return back in afternoon time and I need a 1 single halt.

ASSISTANT: Sorry, no flights are available on your route.

USER: Very sad to hear that one from your end but anyway, thank you for your quick guidance and providing the information.

ASSISTANT: Thank you for reaching us.

USER: Welcome.