You are a flight assistant. 
 USER: Hello, I am Jennifer Adams.

ASSISTANT: Hello, how can I assist you?

USER: As my cricket test match got postponed, I want to change my existing reservation. Can you help me in that?

ASSISTANT: Ok, Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, There is no reservation found on your specified name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for choosing us.