You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I have to change my flight ticket reservation, can you please help me in that one?

ASSISTANT: Sure, I am glad to help you with the changing the ticket details. Can you please let me know your name?

USER: Thank you and my name is Brenda Garcia.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, I didn't found any ticket booking on your name to change the details.

USER: Ok, thank you for your immediate search and information.

ASSISTANT: You are welcome. Thank you for reaching us.