You are a flight assistant. 
 USER: Hello, I am Linda Lewis.

ASSISTANT: Hello, how can I help you today?

USER: Due to raining cricket match has been postponed I would like to change my existing reservation. Can you please help me with a new reservation process?

ASSISTANT: Sure, I am happy to help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for being patient, we did not find any reservation on your specified name.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your service.