You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My examination dates are changed.Can you please help me for changing the existing reservation?

ASSISTANT: Give me a moment, let me check your details.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Sure, I'm Eric Brown.

ASSISTANT: I found a reservation with your details, can I know your further details?

USER: Sure, the airport codes are from MI-DTW to MN-MSP. The preferable dates are from 05/10 to 05/12.

ASSISTANT: Flight number 1006 of Hawaiian airlines is matching with your requirement. Can I proceed?

USER: May I know the price?

ASSISTANT: Price is 200.

USER: That's fine, proceed with my booking.

ASSISTANT: Your ticket was confirmed.

USER: Thank you.

ASSISTANT: You are welcome.