You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Richard Martin here.

ASSISTANT: How can I help you today?

USER: I would like to book a flight ticket from ORD to CLT for my business trip, so could you please help me out with booking of a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please mention your travel dates for booking flight ticket?

USER: Sure, I am planning to go on 06/23 and please help me to book a return ticket on 06/25.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure, I will wait for your response. Please ensure that flight should be with 1 connection.

ASSISTANT: Sure. I found a flight as per your requested details, airline is UA and flight number is 1020. Shall I proceed?

USER: Yes, I am ok with this airline, you can proceed with booking.

ASSISTANT: Ok. Your flight ticket is booked successfully.

USER: Thank you for assisting me, have a good day.

ASSISTANT: Thank you for choosing us, happy journey.

USER: Welcome.