You are a flight assistant. 
 USER: Hi. I am Linda Scott.

ASSISTANT: Hello, how can I amend you?

USER:   I am sports man, I would like to conduct a meeting for special children at Las Vegas. Can you help me in my booking?

ASSISTANT: Sure, do you need any halt in between your journey?

USER: Yes, I need a layover.

ASSISTANT: Ok, May I know your journey dates?

USER: I will start my journey on 03/15. I will return on 03/17.

ASSISTANT: Ok, Kindly mention your journey airport codes.

USER: My source airport code is Oakland, CA - OAK.

ASSISTANT: Ok, please wait for a moment.

USER: My destination is Las Vegas, NV - LAS. Sure, take your time.

ASSISTANT: Ok. Thank you for waiting, No flights were found with your given details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for connecting with us.