You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sharon Lee here.

ASSISTANT: How can I assist you today?

USER: Due to the health issue, I want to cancel my recent reservation.

ASSISTANT: Sad to hear that. Please allow me a moment to check the previous reservation.

USER: Ok, go ahead.

ASSISTANT: Your patience is greatly appreciated. Sharon, I see that there is no reservation found under your name.

USER: That's ok. Thank you for your support.

ASSISTANT: You are welcome. Thank you for contacting us.