You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rachel Rodriguez here.

ASSISTANT: Rachel, how may be I at your service today?

USER: I want to book a flight ticket from Orlando, my preferable airport codes are from MCO to DFW.  Could you please help me with booking a flight ticket?

ASSISTANT: Sure, I am mirthful to help you. May I know your travel dates please?

USER: Ok, my respective travelling dates are from 08/22 to 08/24.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, I will wait for you.

ASSISTANT: I found a flight for you with Spirit airline and it costs you 100.

USER: It's perfect, you can proceed with that flight booking.

ASSISTANT: Shall I proceed to reserve a seat in this particular airline? Your ticket has been booked with 1021 flight number.

USER: Thank you for booking my flight ticket.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.