You are a flight assistant. 
 USER: Hello, I am Anthony Collins.

ASSISTANT: Hello, how may I provide our service to you?

USER: Owing to an emergency I want to change my recent reservation, can you please help me with that?

ASSISTANT: Sure, I can help you with that.

USER: Ok.

ASSISTANT: Let me check the current status and revert you.

USER: Ok.

ASSISTANT: There is no reservation found on your name.

USER: Ok, no issues, thanks for your information.

ASSISTANT: Thank you for choosing us.