You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Katherine Lee. I want to travel from LAS to LAX. Can you help me to book a flight ticket?

ASSISTANT: When are you planning to make your journey?

USER: I want to travel in the flight on Jan 12 and Jan 14.

ASSISTANT: May I know your departure time and arrival time?

USER: I want to return in morning time.

ASSISTANT: Do you have any other requirements?

USER: I want to have a connection of 1.

ASSISTANT: Thank you for waiting, sorry to inform you that unfortunately there is no flights available by the given details.

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

ASSISTANT: Thank you.