You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: May I know your good name?

USER: My name is Gregory Carter.

ASSISTANT: Ok. Sorry Gregory, there is no active reservation found under your name in our records.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Most welcome.