You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to change an existing reservation as my plan to meet my girlfriend due to my health issues. Can you help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Edward Martin.

ASSISTANT: Ok, please wait.

USER: Ok.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.