You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Please help me to change my recent reservation.

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: Elizabeth Brown.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Elizabeth Brown, there is no active reservation found under your name to do changes in that.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.