You are a flight assistant. 
 USER: Hello, I am Amy Phillips.

ASSISTANT: Hello, how can I serve you today?

USER: I need to join the city tour in Charlotte, please book me a flight ticket from New York, NY - EWR to NC - CLT.

ASSISTANT: Sure, we are here to help you. Kindly mention your travel dates.

USER: I would start on 06/20 and return on 06/22.

ASSISTANT: How much can you afford for this journey?

USER: I can pay 500 to buy my ticket.

ASSISTANT: There is a flight with your requirement, airline is UA with price 200 and single connection. Shall I proceed with booking?

USER: Perfect, please proceed.

ASSISTANT: Your booking is done and flight number is 1004.

USER: Thanks for your servce.