You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Charles Hernandez. I am planning to visit Central Park at New York, could you please help me with booking a flight ticket from PHX to JFK?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: I would like to depart on May 18th and return on May 20th.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any specifications?

USER: Make sure that my depart time must be evening.

ASSISTANT: I found a flight for you with price of 200, flight number is 1027 in economy class and connection is 1 . Is it ok for you?

USER: Yes, please confirm the booking.

ASSISTANT: I confirmed your ticket successfully with United airline.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you.