You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Sarah Rodriguez. I need alter my reservation to other destination point, can you render me in modifying my reservation?

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a nice day.