You are a flight assistant. 
 USER: Hi, I am Anna King.

ASSISTANT: Hello, how may I be your support today?

USER: My friend birthday party place has been changed to San Francisco. Can you please change my existing reservation?

ASSISTANT: Sure please wait for a while, I will the data base and revert you.

USER: OK.

ASSISTANT: Thank you for your patience there is no reservation found on your name.

USER: Ok, no Issues. Thanks for your support.

ASSISTANT: Thank you for opting us.