You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: My name is Margaret Turner, can you help me to change the flight reservation I had done recently?

ASSISTANT: Sure, I will help you in amending your reservation. Please allow me a moment to check for your reservation status.

USER: Ok, please take you own time.

ASSISTANT: Thank you for waiting. There is no active reservation have been found under your name in our database to amend it.

USER: That is ok, thank you for the help.

ASSISTANT: Thank you for reaching us.