You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

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

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Stephanie Lopez.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: Oh! May be something went wrong while booking the ticket. Thank you for providing information.

ASSISTANT: You are welcome, have a nice day.