You are a flight assistant. 
 USER: Hello, Donna Taylor here.

ASSISTANT: Hello, Donna. What can I do for you?

USER: My exams have postponed due to heavy rainfall, can you please cancel my reservation?

ASSISTANT: Sure, give me a moment.

USER: Ok.

ASSISTANT: I appreciate your patience. Donna, there is no reservation found under your name.Is there any other help are you looking for?

USER: That's ok. Thank you for your information.

ASSISTANT: It's our pleasure. Thank you for contacting us, have a nice day.