You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Jack Moore, can you help me to book evening flight from LAX?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My travelling dates are 08/04 and 08/06.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your destination airport codes?

USER: My destination airport code is ORD.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: No issues, thank you for your time.

ASSISTANT: You are welcome, have a nice day.