You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me with changing my airport codes in my previous reservation now?

ASSISTANT: Sure, may I know your name?

USER: My previous booking was done with the name of Gregory Scott.

ASSISTANT: Ok, please wait a minute.

USER: I will be waiting for your response.

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

USER: Oh! That's fine, thank you for checking anyways.

ASSISTANT: Thank you for reaching us.