You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am David Rodriguez. Owing to an emergency I had to request for this cancellation, can you help me?

ASSISTANT: Sure, please stand by.

USER: Sure.

ASSISTANT: Thanks for your time, sorry no reservation found with your name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.