You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Jones.

ASSISTANT: How can I help you today?

USER: Can you please be my helping hand in changing my existing reservation?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name in our data.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for choosing us.