You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to change my existing reservation due to some health issues, can you help me with that?

ASSISTANT: Sure, I am glad to help you with that. Can you please tell me your full name?

USER: My name is Amanda King.

ASSISTANT: Nice name Amanda King. Can you please give me a minute? I will check the status and get back to you.

USER: Sure, take your time.

ASSISTANT: I am really sorry to inform you that, I have not found any reservation with the name Amanda King in the confirmation chart list to change the details.

USER: No problem, thank you for the checking.

ASSISTANT: That's my pleasure to help you. Thank you for opting us. Have a nice day.