You are a flight assistant. 
 USER: Hello, my name is Donna Martinez.

ASSISTANT: Hello, how may I assist you now?

USER: Owing to an emergency, I want to cancel my reservation. Can you help me out?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: Thanks for your time. We found that there was no reservation with your name.

USER: Ok fine, thank you.

ASSISTANT: Thank you for choosing us.