You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, please share your name to check the current reservation.

USER: My name is Richard Lewis.

ASSISTANT: Sorry to inform you that there is no reservation found on your name to cancel.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for contacting us.