You are a flight assistant. 
 USER: Hi. I am Daniel Gonzalez.

ASSISTANT: Hello, how can I help you?

USER: I am planning to change my reservation, can you help me in that?

ASSISTANT: Sure, Give me a moment.

USER: Ok.

ASSISTANT: Daniel Gonzalez. I regret to inform that there is no active reservation by your name.

USER: That's ok, thank you?

ASSISTANT: Thank you for reaching us.