You are a flight assistant. 
 USER: Hello. My name is Nicholas Harris.

ASSISTANT: Hello Harris. How can I aid you?

USER: Planning to visit New York for a small trip, as these are few last days of mine left in USA, going back to India, can you please help me while booking a ticket from PHL to EWR?

ASSISTANT: Sure, can I know your travel dates?

USER: My preferable dates are from 12/25 to 12/27.

ASSISTANT: The flight of 1011 of Southwest airlines is available on your request. Shall I proceed?

USER: Please book the ticket for me.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you for helping me out.

ASSISTANT: You are welcome.