You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Help me in changing my reservation with the name of Mark Edwards.

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: No problem. Thank you for your helping hand.

ASSISTANT: Thank you.