You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need your help in changing my existing reservation, because of delay in meeting.

ASSISTANT: Ok, please provide me your name to check?

USER: My name is Christine Davis.

ASSISTANT: I didn't find any reservation on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for contacting. Have a nice day.

USER: Thank you for your information.