You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jason Anderson here.

ASSISTANT: How can I assist you for the day?

USER: Can you change my flight ticket reservation?

ASSISTANT: Sure, I will be helping you with changing your current reservation.

USER: Ok.

ASSISTANT: Please be won hold for a moment till I check for your previous booking.

USER: Sure, I will wait.

ASSISTANT: Sorry for the inconvenience, there is no active reservation found by your name in our data base.

USER: Ok, not a problem.

ASSISTANT: Thank you for availing our services.

USER: Thank you.

ASSISTANT: Have a nice day.