You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Cynthia Miller. I want to change my existing reservation. Could you help me with that?

ASSISTANT: Sure, give me a minute.

USER: Ok.

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

USER: My travelling dates are from 05/28 to 05/30.

ASSISTANT: May I know your source and destination points?

USER: My source airport code is MCO and destination airport code is DTW.

ASSISTANT: We found a flight on frontier airline, flight number 1010 with the fare of 100, shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.