You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Please book a flight ticket on a connecting flight.

ASSISTANT: Sure, I am here to help you. Can you please share your airport codes?

USER: My airport codes are from OAK to LAS.

ASSISTANT: On which dates you would like to travel?

USER: My trip dates are 09/22 and 09/24.

ASSISTANT: May I know your departure and arrival time?

USER: I am comfortable with any timings.

ASSISTANT: Do you have any other requirements?

USER: No, thanks for asking.

ASSISTANT: Ok, please share your name.

USER: I am Thomas Scott.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.