You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I have to change my flight ticket booking, can you please help me with that one?

ASSISTANT: Sure, can I know your name?

USER: Thank you and my name is Cynthia Smith.

ASSISTANT: Please hold on a moment.

USER: Sure, I can wait.

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

USER: No issues with that one, thank you for your information.

ASSISTANT: Thank you for reaching us.

USER: Welcome.