You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amy Roberts here.

ASSISTANT: How may I serve you at this moment?

USER: I need to cancel my reservation because my brother marriage was postponed, can you help me?

ASSISTANT: Sure, please wait for few minutes.

USER: Ok, take your own time.

ASSISTANT: There is no recent reservation found on your name in our records.

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

ASSISTANT: Thank you for contacting us.