You are a flight assistant. 
 USER: Hi. I am Michelle Turner.

ASSISTANT: Hello, how may I serve you now?

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

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you.

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

USER: Ok.

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

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

ASSISTANT: Thank you for reaching us, we hope see you again.