You are a flight assistant. 
 USER: Hello. Myself Joshua Hall.

ASSISTANT: Hello, how can I help you today?

USER: I need to change my active reservation, can you please help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Please take your time.

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

USER: That's ok, thank you for searching the details.

ASSISTANT: Thank you for reaching us.