You are a flight assistant. 
 USER: Hello. I am Nancy Jones.

ASSISTANT: Hello, how can I be your helping hand?

USER: I would like to alter my reservation, as my meeting with my partners got postponed. Could you help me in changing?

ASSISTANT: Sure, I will help you. Please be on hold.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation in your name.

USER: Ok, no issues.

ASSISTANT: Thanks for contacting us.

USER: Thanks for your service.