You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jason Martinez.

ASSISTANT: How can I aid you today?

USER: I need to change my existing reservation due to postpone of my cultural event. Could you please help me?

ASSISTANT: Please mention your travelling airport codes.

USER: My travelling airport codes are NC-CLT and NV-LAS.

ASSISTANT: Can I know your preferable dates? Just give a moment.

USER: Sure, my travelling dates are 04/01 and 04/03.

ASSISTANT: Flight number 1011 is available with UA airline having 1 connection and airfare is 100. Can I proceed to booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.