You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: This is Susan Mitchell, from Las Vegas.

ASSISTANT: Ok.

USER: Please book a ticket with a connecting flight, to reach Oakland, OAK. Can you help me in this?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: May I know your boarding point?

USER: LAS, Las Vegas is my boarding point.

ASSISTANT: When did you scheduled to travel?

USER: My scheduled dates are on 06/23 and 06/25.

ASSISTANT: Sorry to inform you that, no flights are available on your requirement.

USER: That's ok, I will choose another alternative for my journey.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.