You are a flight assistant. 
 USER: Hello, I am Carolyn Parker.

ASSISTANT: Hello, what can I do for you?

USER: I am a tennis player, due to sudden changes in weather it has been postponed to another date, so can you please aid me with changing my existing reservation?

ASSISTANT: Sure, I would be happy to help you. Please give me a moment, I will check the reservation list and revert you.

USER: Sure, I will wait.

ASSISTANT: Sorry there is no reservation found on your name.

USER: Not an issue, thank you for your information.

ASSISTANT: Thanks for approaching us and have a nice day.