You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: James Hill here. I need to cancel my recent reservation because my brother marriage is postponed.

ASSISTANT: Sure, give me  a minute.

USER: Sure, take your time.

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

USER: It's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.