You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am Andrew Mitchell, I would like to change my recent reservation, can you help me with this?

ASSISTANT: Sure, I am here to help you. Please give me a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for availing us.