You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I oblige you today?

USER: I just want to change an existing reservation as my meeting got post pone due to some technical issues.Can you help me?

ASSISTANT: Sure, please share your good name?

USER: Thank you. Carolyn Wright here.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no active reservation found with the given name.

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us.