You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Margaret Harris, can you please help me to change my reservation as my destination location got changed to LAS?

ASSISTANT: Sure, give me a minute.

USER: Sure, will wait for your response.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.