You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I have planned to book a plane ticket from SFO to IAD, can you assist me in booking my ticket?

ASSISTANT: Sure, will you please let me know your travel dates?

USER: My preferred dates are Dec 29th and Dec 31st.

ASSISTANT: Do you need a direct flight or connecting flight?

USER: I need to travel in connecting flight.

ASSISTANT: Any other requirements to be met?

USER: Make sure that my return time must be morning.

ASSISTANT: Please forward your name.

USER: Kathleen Smith.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, currently there are no flights are going on your way.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for choosing us.