You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Kathleen Thompson. Please help me to book a flight ticket from ORD to OAK.

ASSISTANT: When are you planning to start and return on?

USER: My trip dates are from Nov, 08 to Nov, 10.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a single connecting flight.

ASSISTANT: At what time do you want to depart and return on?

USER: I need to depart and return in the afternoon.

ASSISTANT: In which class do you want to fly?

USER: I am comfortable with any class.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.