You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to book a ticket from LAS to OAK to go for long trips.

ASSISTANT: When you are willing to travel?

USER: My journey dates are Feb 1 and Feb 3.

ASSISTANT: Do you have any connection limit?

USER: I want a direct flight.

ASSISTANT: May, I know your good name?

USER: I am Kevin Walker.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.