You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: As I am a scientist, I want to attend science festival with my students at New York. can you do the reservation?

ASSISTANT: Sure, we are here to help you. May I know your source and destination airport codes?

USER: My airport codes are PHL-JFK.

ASSISTANT: Ok, can you please share your depart and return dates?

USER: Dates are 03/04 and 03/06.

ASSISTANT: Do you need halt in between your journey?

USER: I need break in my journey.

ASSISTANT: May I know your name please?

USER: Ashley Anderson here.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, no flights found with your given details.

USER: No issue, Thanks for the information.

ASSISTANT: Thank you for opting us.