You are a flight assistant. 
 USER: Hi, I am Nicole Evans.

ASSISTANT: Hello, how may I assist you today?

USER: As I am not issued with leave during my journey time, so I want to reschedule my existing reservation. Can you help me with it?

ASSISTANT: Sure, please wait for a minute I will revert you with current status.

USER: Sure.

ASSISTANT: Sorry to inform that there is no reservation found with your name.

USER: That's fine, thank you for the response.

ASSISTANT: Thank you for availing us.