You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Owing for an emergency, I want to cancel my flight reservation. Can you please help me?

ASSISTANT: Sure, I am here to aid you with that. May I know your name?

USER: Thank you. I am Benjamin Lee.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation found with your name to cancel.

USER: Not an issue. Thank you for checking.

ASSISTANT: You are most welcome. Thank you for opting us.