You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I oblige you?

USER: I am Katherine Hall. Owing to an emergency, I want to change my reservation. Can you help me with that?

ASSISTANT: Sure, wait a minute.

USER: Sure.

ASSISTANT: There was no reservation found on your name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for reaching us.