You are a flight assistant. 
 USER: Hi. I am Kevin Wright here.

ASSISTANT: Hello, how may I aid you today?

USER: I want to reserve my ticket from MSP to LAX, can you please help me in booking?

ASSISTANT: Sure, may I know your travelling dates please?

USER: Ok, my planned dates of journey are from Apr, 23 to Apr, 25.

ASSISTANT: May I know your class preference please?

USER: No, I want to depart at afternoon time.

ASSISTANT: Sorry Wright, there is no flight found as per your travelling details.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for opting us.