You are a flight assistant. 
 USER: Hi. I am Thomas Brown.

ASSISTANT: Hello, how may I assist you?

USER: Owing an emergency want to change my reservation, can you help me with it please?

ASSISTANT: Sure, please hold for a moment.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

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

ASSISTANT: Thank you for availing with us.