You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Samantha Perez. Due to my health problem I want to cancel my reservation, can you help me that?

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting we found reservations on your name. Shall I proceed for cancel?

USER: Yes, you can proceed for cancellation.

ASSISTANT: Your ticket has been cancelled.

USER: Thanks for your kind help.

ASSISTANT: Thanks for choosing us.