You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, can you please let me know your name?

USER: Sure, my name is Susan Hall.

ASSISTANT: Give me a moment.

USER: Sure, take your own time.

ASSISTANT:  Susan Hall. I regret to inform that there is no reservation by your name.

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

ASSISTANT: Thank you for reaching us.