You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, I am willing to help you. May I know your name please?

USER: I am Melissa Jones.

ASSISTANT: Ok, wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry we didn't find any reservation on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us, have a nice day.