You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Alexander King this side. For some issues I want to change my recent reservation, can you please help me with it?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: It's ok, thank you for checking.

ASSISTANT: Thanks for reaching us, have a good day.