You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Brandon Martinez.

ASSISTANT: Brandon, how can I assist you?

USER: I recently booked a ticket to go to my home town, but, suddenly some one called to me and ask to donate the blood due to an emergency. Can you please cancel my ticket?

ASSISTANT: So nice of you. Let me check.

USER: Thank you. Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, no problem , thank you for providing your information.

ASSISTANT: Thank you for approaching us.