You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Nicole Collins. I'm searching a direct flight for my trip on 11/22 date. Can you please help me in finding a flight?

ASSISTANT: Sure, can you please tell your travelling locations?

USER: My travelling locations are from DEN to OAK.

ASSISTANT: Do you have any plan of booking a return ticket?

USER: Sure, pleas book my return ticket on 11/24 date.

ASSISTANT: Sure. Sorry, there are no flights available with your requested dates.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you and have a nice day.