You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Lopez.

ASSISTANT: What type of help that you are expecting from my side?

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

ASSISTANT: Sure, I will help you and please allow me a moment to check your previous reservation list.

USER: Thank you for accepting. Sure.

ASSISTANT: Thank you for waiting, I have checked but it is showing that there is no reservation obtained for the user name.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: You are most welcome and thank you for approaching us.