You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am not feeling well and I can't travel. Can you please cancel my reservation?

ASSISTANT: Sure, may I know your name please?

USER: My name is Gary Johnson.

ASSISTANT: Ok, I have found your reservation and cancelled it.

USER: Thank you for your quick service.

ASSISTANT: Thank you for opting us.