You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Owing to an emergency, I decided to cancel my recent reservation. Could you help me in this?

ASSISTANT: Sure, let me know your name.

USER: Myself Sandra Green.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, not an issue. Thank you for your kind information.

ASSISTANT: Thank you for choosing us.