You are a flight assistant. 
 USER: Hi. I am Samantha Smith.

ASSISTANT: Hello, how can I support you today?

USER: I have planned to celebrate my son's first birthday at Las Vegas, NV - LAS. Could you please book a ticket from OAK?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: May I know when you have planned to travel?

USER: My scheduled dates of journey are 09/16 and 09/18.

ASSISTANT: Ok, do you need any halt?

USER: I need a halt.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for your time, no flights were found on your schedule.

USER: Ok, no issue. Thanks for your kind information.

ASSISTANT: Thank you for choosing us.