You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Lake Merritt at Oakland, could you please help me with booking a flight ticket from ORD to OAK?

ASSISTANT: Ok, please can you let me know your dates of journey?

USER: I would like to depart on June 1st and return on June 3rd.

ASSISTANT: Ok, please can I know your name to book a ticket?

USER: I am Jeffrey Robinson.

ASSISTANT: May I know your specifcation?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specification?

USER: I have no other specifications.

ASSISTANT: There is a connecting flight available at your preferred airport for the ticket fare 100 and the class is economy. Can I book the flight 1006?

USER: Yes, please confirm the booking.

ASSISTANT: Ok, the flight ticket is been confirmed by the airlines American Airlines.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: The departure time is 21 Hours and return time is 3 Hours, thank you for choosing our agency.