You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Due to my ill health, doctor advised me to take rest. I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, I will help you. But I need your name to check the reservation details in our database.

USER: Sure, my name is Gary Lee.

ASSISTANT: Please wait for a moment, I will check and revert back to you.

USER: Sure, take your time.

ASSISTANT: Gray Lee, I found your reservation and I have been successfully cancelled that reservation.

USER: Ok, thank you so much for your help.

ASSISTANT: It's my pleasure, have a great day.