You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I made a reservation earlier to attend a family function but due to some issues it has been postponed. Can you help me with changing my reservation?

ASSISTANT: Sure, may I know your good name?

USER: I am Lisa Lee.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, no problem. Thank you for your quick response.

ASSISTANT: Thank you for reaching us.