You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Christine Turner here.

ASSISTANT: How can I assist you today?

USER: I am looking for a flight ticket with afternoon as the depart time. So can you book it for me?

ASSISTANT: Sure, can you please share your travel dates?

USER: The travel dates are from Jan 30 to Feb 01.

ASSISTANT: Could you please help me with the airport codes?

USER: The airport codes are from LAX to IAD.

ASSISTANT: May I know your connection limit?

USER: I prefer a stopover flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: I am Christine Turner.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for contacting us.