You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Brenda Rodriguez here. Please help me out in cancelling the previously booked ticket.

ASSISTANT: Sure, please provide your name to check your reservation details in our database.

USER: I already mentioned.

ASSISTANT: Thank you. Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, I did not find any reservation by your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.