You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Paul Roberts. Can you help me in changing my reservation?

ASSISTANT: Sure, I am here to help you. Please give me a minute, I will check the status and get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting, There was no reservation found on your given name.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us.