You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how may I guide you?

USER: I would like to change my recent reservation, will you help me with that?

ASSISTANT: Sure, I am glad to help you. Can you please tell me your name?

USER: Thank you for accepting my request, myself Rebecca Parker.

ASSISTANT: Ok, please hold on for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you, there is no active reservation under your name to change the details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Most welcome. Thanks a lot for reaching our agency.