You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Jacob Thompson.

ASSISTANT: Jacob Thompson, how may I assist you with today?

USER: I have a client meeting at Denver, to meet my colleagues. Can you please help me in reserving the ticket from SFO to DEN?

ASSISTANT: I am glad you have contacted us. I will help you.

USER: Thank you very much for quick access.

ASSISTANT: May I know whether you need a direct or connecting flight please?

USER: I am flexible with single connection flight.

ASSISTANT: Please help me with your class preference.

USER: I am comfort with any class.

ASSISTANT: Please let me know with your planned travel dates.

USER: I am planning my trip on Oct 15, and again I will return back on Oct 17.

ASSISTANT: Please let me know if you have any other preferences with respect to your journey.

USER: My depart time is afternoon.

ASSISTANT: Jacob Thompson, I am really sorry to inform you that there are no flights that departs in the afternoon.

USER: Not a big problem, I will choose an other way to reach my destination.

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

USER: Thank you very much for your information.

ASSISTANT: You are welcome.