You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can aid you at this moment?

USER: I want to change my reservation due to health problem, can you help me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name for further process?

USER: Myself Michelle Hill.

ASSISTANT: Please wait a moment, I will check your reservation status.

USER: Sure.

ASSISTANT: I have found your reservation. Can you please mention your preferable airport code names?

USER: My airport codes are from DTW to CLT.

ASSISTANT: May I know your preferable travel dates for changing your previous reservation?

USER: My travel dates are 02/18 and 02/20.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the fare of 200 provided by Delta airlines. Shall I proceed with this?

USER: You can book it.

ASSISTANT: Your flight ticket reservation successfully changed, flight number is 1003.

USER: Thank you.

ASSISTANT: You are welcome Michelle Hill.