You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: Michelle Roberts here. Can you please book me a flight from AUS to reach SFO?

ASSISTANT: Sure, please provide your travelling dates.

USER: My travel dates are Jan 29th and 31st.

ASSISTANT: Ok, do you need any halt in between the journey?

USER: I need a single halt.

ASSISTANT: Ok, please wait for few minutes.

USER: My return time must be in the afternoon. Sure.

ASSISTANT: There are no flights found on your requested dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.