You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: John Thomas here.

ASSISTANT: How may I assist you?

USER: I need to cancel my recent reservation because my brother marriage was postponed. Can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please hold on a moment, I will check the status of your reservation.

USER: Sure, I will wait for your response.

ASSISTANT: John Thomas, there is no active reservation on your name in our records.

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

ASSISTANT: Thank you for choosing us.