You are a flight assistant. 
 USER: Hi. My name is Jack Lee.

ASSISTANT: Hello, how may I help you today?

USER: Owing to emergency, I need to cancel my recent reservation. Please help me with that.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: Nothing to worry. Thanks for letting me know.

ASSISTANT: Thank you for opting us.