You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I have made a reservation earlier to attend for a Live Concert, but due to some health issues, I need to change it. Will you please help me in this?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name please?

USER: Sure, my name is Andrew Edwards.

ASSISTANT: Please wait until I look for your reservation and revert back to you.

USER: Sure, take your own time.

ASSISTANT: We didn't find any reservation in our system with your name.

USER: That's Ok, thank you for your service.

ASSISTANT: Thank you for connecting us.