You are a flight assistant. 
 USER: Hello, I am Kimberly Johnson.

ASSISTANT: Hello, how can I assist you?

USER: As my sister's marriage got postponed, Can you please cancel my reservation?

ASSISTANT: Sure, please wait for few minutes, let me check and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting, I found a reservation. Shall I proceed with cancelling.

USER: Yes.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you, for reaching us.