You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Christine Gonzalez.

ASSISTANT: How can I assist you, Gonzalez?

USER: I have given the wrong details for my reservation, now I would like to change my existing reservation.

ASSISTANT: Sure, can you please wait for a minute?

USER: Sure.

ASSISTANT: There are no active reservations found with your details, Christine.

USER: Ok, no problem, thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.