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

ASSISTANT: Hello, how can I guide you today?

USER: Will you aid me in changing my previous reservation as my plan to attend a film festival got postponed?

ASSISTANT: Sure, I will aid you in this.

USER: Thank you.

ASSISTANT: Please give me a minute to check the reservation list.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, no reservation was found on your name in our database.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for opting us.