You are a flight assistant. 
 USER: Hello, I am Robert Adams.

ASSISTANT: Hello Adams, how can I render you today?

USER: I want to reschedule my reservation. Can you help me to amend my reservation?

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Sure, take your time.

ASSISTANT: Sorry Adams, there are no flights reserved on your given name.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: You are welcome.