You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Carol Miller.

ASSISTANT: How may I assist you?

USER: I need a round trip flight from IAD to IAD. Can you help me in booking a ticket?

ASSISTANT: Sure, please provide your travelling dates.

USER: My journey dates are 07/24 and 07/26.

ASSISTANT: Please hold on a moment.

USER: Ok, take your time.

ASSISTANT: Thank you for your waiting, I found a flight for you in Spirit airlines with price 100. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1010.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing our service.