You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gary Roberts. I want to reschedule my recent reservation as my plan for an adventure trip got postponed. Can you help me?

ASSISTANT: Gary, please wait. Let me check for your reservation status.

USER: Sure.

ASSISTANT: Sorry Gary, I have not found any reservation by your name.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.