You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please change my recent reservation? As my planned trip has been postponed.

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Nicole Gonzalez.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name in my records. Thank you for reaching us.

USER: Oh! That's ok, thank you for giving the information anyways.