You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Christopher Gonzalez here.

ASSISTANT: Christopher Gonzalez, how may I assist you today?

USER: I would like to visit Boston, please help me in booking a ticket from ORD to BOS.

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: My planned travel dates are on Oct 15 and Oct 17.

ASSISTANT: Please let me know with your depart and arrival time.

USER: I would like to return in the afternoon.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No more preferences.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Christopher Gonzalez, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a great day.