You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ryan Davis.

ASSISTANT: Ryan Davis, how may I assist you today?

USER: I would like to book a ticket to visit a new place at EWR. Can you please help me out to book a ticket from SFO?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: Thank you for your response, I want to take off on Apr 23 and book my return ticket also on Apr 25.

ASSISTANT: Please help me with your depart and return time.

USER: I want to return in morning time.

ASSISTANT: Do you need a direct or connecting flight?

USER: I want a direct flight.

ASSISTANT: May I know if you have any class preferences please?

USER: I am ok with any class.

ASSISTANT: Please let me know if you have any other preferences.

USER: I don't have any preferences.

ASSISTANT: Ryan Davis, I am sorry to inform you that there is no active flights available that matches your needs.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a great time.