You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to change my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please share me your good name?

USER: I am Jerry Brown.

ASSISTANT: Please wait for a moment while, I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data to change it.

USER: No problem, thank you for checking.

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