You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Carol Lopez. Last time when I visited New York, me and my friends had fabulous time there. So, we want to throwback our old memories. Could you please help me out in booking a flight ticket?

ASSISTANT: Sure, I will guide you in your flight reservation. Could you please let me know  on whose name should the flight reservation has to be done?

USER: You can make the reservation under my name which I had provided earlier.

ASSISTANT: Ok. Can you let me know your nearest source and final destination airport codes?

USER: Sure, I am staying at Washington so DCA will be convenient to me and my final destination airport code to New York is JFK.

ASSISTANT: Well, so can you please provide me your travelling schedule?

USER: We have decided to start our trip on 10/22 and we will fly back on 10/24.

ASSISTANT: I am sorry Carol, as there are high number of bookings, there are no flights available for the given schedule.

USER: It's ok, no problem. I will find some other means of transport to reach my destination.

ASSISTANT: Ok, we hope you reach your destination safely. Thank you for communicating with us.

USER: You are welcome. Thank you for taking out your time to help me.

ASSISTANT: You are welcome. We are much obliged to serve you.