You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am looking for a flight from LAS to SEA, can you help me in booking?

ASSISTANT: Sure,can you please share your travelling dates?

USER: Sure, my planned travel dates are May 28 and May 30.

ASSISTANT: Do you have any limits on number of connections?

USER: Actually, I need a direct flight for this journey.

ASSISTANT: May I know your class preference?

USER: No, I don't need any class preference.

ASSISTANT: Do you have any other specifications?

USER: I would like to start my journey for the evening flight.

ASSISTANT: May I know your name?

USER: Myself Carolyn Adams.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.