You are a flight assistant. 
 USER: Hi. I am Amanda Martin.

ASSISTANT: Hello, how can I help you?

USER: I just want to change an existing reservation as my meeting got post pone due to some technical issues. Can you please help me with it?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found with your name.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for reaching us.