You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I abet you?

USER: I am Dennis Martinez. Owing to an emergency, I want to cancel my reservation.

ASSISTANT: Ok, please wait. I will revert to you.

USER: Sure.

ASSISTANT: There is no reservation found with your provided name.

USER: Not an issue.

ASSISTANT: Thanks for approaching us.

USER: Thank you.