You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amy Smith.

ASSISTANT: How can I help you today?

USER: I am planning to change my reservation to another destination, so can you help me to change my reservation?

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

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to inform this, I had checked in reservation list on your name but no reservation is found.

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

ASSISTANT: Thank you for opting us.