You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Robert Perez.

ASSISTANT: How may I assist you?

USER: My business meeting has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Please wait for a while, let me check your details.

USER: Sure.

ASSISTANT: Sorry Perez, there is no reservation found under your name.

USER: That's ok, no issues. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.