You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you help you out?

USER: I want to change my existing reservation, due to some health issue. Can you please help me out?

ASSISTANT: Sure, I am glad to help you out in amending your reservation. Please provide me your name.

USER: My name is Raymond Phillips.

ASSISTANT: I found an active reservation on your name in our database. Can you disclose your location airport codes?

USER: My travelling airport codes are DEN to BOS.

ASSISTANT: Ok, please provide me your trip dates.

USER: I am planning to start my journey on Oct 20 and return back on Oct 22.

ASSISTANT: Do you have connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Here is a connecting flight in economy class, can I proceed with it?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with 1005 flight in JetBlue airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.