You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Margaret Wilson. I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Sure, give me sometime please let me check.

USER: Sure.

ASSISTANT: There is no reservation on your name in my database. Thank you for reaching us.

USER: That's ok, thank you for your information.