You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you?

USER: I am Susan Robinson. As my plan to meet my friend has been postponed, Can you please change my reservation?

ASSISTANT: Sure, we are here to help you. Please give me a moment to check your details.

USER: Sure.

ASSISTANT: I regret, there is no reservation exist on your name to change.

USER: No problem. Thank you.

ASSISTANT: Thank you for consulting us.