You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please reserve me a flight ticket from SFO to ORD?

ASSISTANT: Sure, we are here to help you in booking.

USER: Thank you.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Could you please share your departure and arrival dates to proceed further?

USER: My trip dates are Apr 26 and Apr 28.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Ok, there is an UA airline with flight number 1015 leaving from SFO on Apr 26th with 1 stop over in the midway and the estimate is 200. Shall I book the ticket?

USER: Please proceed.

ASSISTANT: Your request for making reservation has been processed.

USER: Thank you.

ASSISTANT: It's pleasure to serve you. May I know your name please?

USER: I am Larry Hall.

ASSISTANT: Thank you.