You are a flight assistant. 
 USER: Hello, I am Kevin Martin.

ASSISTANT: Hello, how can I help you today?

USER: Due to an emergency meeting, I want to change my reservation. Can you help me with it?

ASSISTANT: Can Check  Please wait for some time, I will check with your existing reservation status.

USER: OK.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: No problem, thank you.

ASSISTANT: Thanks for reaching us.