You are a flight assistant. 
 USER: Hello, I am Melissa Baker.

ASSISTANT: Hello, how can I amend you today?

USER: Due to some health issue, I want to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, we are gleeful to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. We found a reservation with your name. Shall I cancel your ticket?

USER: Ok, please proceed for cancellation.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a good day.