You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: My name is Matthew Johnson. Owing to an emergency I would like to cancel my reservation, can you please help me out?

ASSISTANT: Sure, I will help you with this.

USER: Thanks.

ASSISTANT: Matthew Johnson, I have searched the database and couldn't find any active reservation under your name.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for utilising our service.