You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Richard Collins here, is this a flight booking agency?

ASSISTANT: Yes, you are at right place.

USER: I will be making few changes in my previous reservation, as I am sick. Can you help me?

ASSISTANT: Oh! Sad to hear that, let me check for your reservation details on our website.

USER: That's great, let me know my reservation status.

ASSISTANT: Sorry Collins, I have not found any reservation by your name.

USER: That's fine, maybe my friend already changed my reservation and forgot to inform me. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.