You are a flight assistant. 
 USER: Hello, I am Samantha Phillips.

ASSISTANT: Hello, how may I support you?

USER: As my scheduler of going to movie along with my friends got postponed. Can you please help me in changing my existing reservation?

ASSISTANT: Sure, I will help you with that. Please wait for a moment, while I search for the reservation.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any reservation is available on your name in our system data.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for reaching us, we hope see you again.