You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am looking to book a flight ticket from ORD to SFO. Can you help me for that?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: My name is Alexander Lopez.

ASSISTANT: Thank you. Please help me with your planned travelling dates.

USER: My travelling dates are Mar 27 and Mar 29.

ASSISTANT: Do you prefer to fly in a economy or business flight?

USER: I prefer to book a economy class.

ASSISTANT: Please let me know if you need a break in your journey.

USER: I need a single connecting flight.

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

USER: My airline preference is normal cost.

ASSISTANT: Sure, I will check for that flight. Please allow me a minute.

USER: Sure, I will wait for your response.

ASSISTANT: We have a connecting flight operated by Delta Airlines with a fare of 100 only. Is it ok for you?

USER: Ok, please proceed for booking.

ASSISTANT: I have booked your ticket in flight-1017. It departs at 19:00 hours and arrives at 2:00 hours.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us. Have a great time. You are welcome.