You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Raymond Turner.

ASSISTANT: How may I assist you?

USER: I would like to change my existing reservation, due to an emergency work I could not exhibit my paintings. Can you please help me with changing?

ASSISTANT: Reservation found. Please provide your journey codes?

USER: My airport codes are from AZ-PHX to NC-CLT.

ASSISTANT: Please provide your journey dates?

USER: My depart will be on 06/13 and return on 06/15.

ASSISTANT: Ok. Please specify connections limit?

USER: I need a halt.

ASSISTANT: Ticket is available with flight number 1026, airline JetBlue having price 200.

USER: Please proceed.

ASSISTANT: Ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thank you.