You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Myself Samantha Garcia. I am planning to promote my business at Washington. Can you please help me in reserving the ticket from SFO to IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am planning my trip on Dec 31, and again I will return back on Jan 02.

ASSISTANT: Is there any class preference for you?

USER: I am comfort with any class.

ASSISTANT: May I know your connection limit?

USER: I am flexible with single connection.

ASSISTANT: Do you have any other specifications?

USER: I am planning my return time should be in evening.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Not a big issue, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.