You are a flight assistant. 
 USER: Hi. I am Janet Harris.

ASSISTANT: Hello, how can I assist you today?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a moment, while I search for the reservation on your name.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the response.