You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, I will help you with that. Please provide me the name on which you reserved earlier.

USER: My name is Jennifer Lopez.

ASSISTANT: Ok, please wait a moment. Sorry Lopez, no reservation found under your name to cancel.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for providing information.

ASSISTANT: Most welcome.