You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to change my recent reservation due to some issues, can you help me in doing that?

ASSISTANT: Can I know your name?

USER: Jerry Lewis here.

ASSISTANT: Let me check details with your recent reservation.

USER: Ok.

ASSISTANT: I regret, there is no reservation by name Jerry Lewis.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you.