You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Myself Paul Parker. I want change my existing reservation due to some sudden situation happened to me.

ASSISTANT: We found a reservation, can you share your travelling dates?

USER: Yes definitely. My planned dates for change is from 12/13 to 12/15.

ASSISTANT: Help me with the airport codes.

USER: My airport codes are from JFK to DTW.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: There is a flight with number 1017 in airline Hawaiian. The fare is 100 with 1 connection. Can I book it?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed, happy journey.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching us.