You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What guidance do you require from our travel agency?

USER: I need you to book a flight ticket from DEN to LGA. Please help me with it.

ASSISTANT: Sure, I am here to help you to book a flight ticket. Can I know your departure and arrival dates please?

USER: April 18 and 20 are my planned travelling dates.

ASSISTANT: On which name do you need to reserve a flight ticket?

USER: On my name, William Garcia.

ASSISTANT: Ok, which type of class do you choose either an economy class or a business class?

USER: I am comfortable with any class to fly.

ASSISTANT: Ok William Garcia, would you like to travel in a non-connecting flight or a connecting flight?

USER: I need a break in my journey. So, I prefer to fly in a connecting flight.

ASSISTANT: Ok, I need sometime to check the flight availability with your requirements. Can you please provide it?

USER: No worry, no hurry. Take your time.

ASSISTANT: An American Airlines is found in this route which providing the service, the flight is having a single connection limit which departing at 22:00 hours and returning at 02:00 hours. Shall I reserve an economy class ticket which costs 100?

USER: Great! Please reserve my seat.

ASSISTANT: Based on your request, I have reserved a seat in the flight-1018. Have a nice journey.

USER: I really appreciate your great help.

ASSISTANT: You are welcome. Thank you for opting us.