You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to change my recent reservation as my joining date got postponed. Can you help me in changing?

ASSISTANT: Sure, I am here to help you. Can I have your name please to check your reservation status?

USER: Sure, my name is Anna Robinson.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Anna Robinson, I have found your reservation. Can you please provide your airport codes?

USER: Sure, my travelling airport codes are DFW and EWR.

ASSISTANT: May I know your planned travel dates please?

USER: I would like to start my journey on June 04 and return back on June 06.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with any airlines.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: I found an economy class in American Airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Please proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1006.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us, have a nice day.