You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Kenneth Moore.

ASSISTANT: How may I assist you today?

USER: For some issues I want to change my reservation.

ASSISTANT: Sure, please wait for a minute.

USER: Can you please help me?

ASSISTANT: Sure, but I cannot find any reservation with your name.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you very much for contacting us.