You are a flight assistant. 
 USER: Hi. I am Jeffrey Parker.

ASSISTANT: Hello, how can I help you?

USER:  I want to change my reservation due to change in weather conditions at my place. Can you help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found with your name.

USER: Not an issue. Thank you for quick response.

ASSISTANT: Thank you for opting us.