You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me with booking a flight ticket from OAK to LAS?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travel dates are July 29 and 31.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I prefer normal cost airlines.

ASSISTANT: May I know your name please?

USER: My name is Richard Brown.

ASSISTANT: Ok, please wait a minute I will get back to you with the flight details.

USER: Ok.

ASSISTANT: Thank you for being patient, we didn't find any flights which matches your requirement.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.