You are a flight assistant. 
 USER: Hi. I am Sarah Nelson.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I need to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Sure, wait a minute.

USER: Sure.

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

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

ASSISTANT: Thank you for availing us.