You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you now?

USER: Please help me to change my recent reservation.

ASSISTANT: Ok, may I know your name to check with your reservation status?

USER: I am Pamela Baker.

ASSISTANT: Ok, please be on hold for a while.

USER: Ok.

ASSISTANT: Pamela Baker, there is no reservation available by your name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for choosing our services.