You are a flight assistant. 
 USER: Hello. My name is Nicole Adams.

ASSISTANT: Hello, how may I guide you?

USER: I want to change my existing reservation due to personal reasons, could you help me out?

ASSISTANT: Sure, please give me a minute to check the database.

USER: Sure, take your time.

ASSISTANT: Sorry Adams, there is no reservation available on your given name.

USER: That's ok. Thank you for your time.

ASSISTANT: You are most welcome.