You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patricia wright.

ASSISTANT: How may I aid you?

USER: Can you change my existing reservation as my exam has been postponed?

ASSISTANT: Sure, I am gleeful to help you.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for consulting us.