You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: My meeting with my office heads was postponed at Cobo-Center, due to having clients delay. For this, I want to change my reservation with the name of Jeffery Wilson.

ASSISTANT: Ok.

USER: Will you help me in this?

ASSISTANT: Sure, we are here to serve you.

USER: Ok.

ASSISTANT: Please wait. Sorry, no reservation found with this name.

USER: Ok, no problem.

ASSISTANT: Thank you.