You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: Please help me with changing my reservation due to some changes in the plan of my trip with my colleagues? Can you help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thanks for your response.

ASSISTANT: May I know your name to check the current status?

USER: Sure, Patricia Walker is my name.

ASSISTANT: Please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, not a problem. Thanks for your response & help.

ASSISTANT: Thank you for availing us.