You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you at this moment?

USER: Can you please help me in changing the reservation as my family function got postponed?

ASSISTANT: Sure, may I know your name to proceed further?

USER: I am Ashley Williams.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your name in our portal.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching out to us.