You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donna Martin here.

ASSISTANT: Is there any quick help that you need from my side?

USER: Can you change my flight ticket reservation?

ASSISTANT: Sure, please give me a moment to check your booking and I will get back to you.

USER: Ok.

ASSISTANT: Thank you for your patience, I have checked based on your request and it is showing that there is no reservation obtained on your name to change it.

USER: Ok, not a problem. Thank you.

ASSISTANT: It's my pleasure to help you and thank you for consulting our agency.