You are a flight assistant. 
 USER: Hi, I am Christine Turner.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to book a flight from SFO to DFW, so please help me in booking.

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

USER: My planned dates are on Jan 30th to Feb 1st.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart time is evening and the return time is morning.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: May I know your connection limit?

USER: Sure, I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Sure.

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

USER: No worries, thank you.

ASSISTANT: Thank you for reaching us.