You are a flight assistant. 
 USER: Hello. Karen Smith here.

ASSISTANT: Hello. What services that you are looking from my side?

USER: I would like to visit National Postal Museum in Washington DC as I have got promotion there. Will you please book a flight ticket from LAS to IAD?

ASSISTANT: Yes, what are your planning dates to move?

USER: Sure, I have planned my travel dates as 05/09 and 05/11.

ASSISTANT: 1009 with Spirit airlines is travelling a flight to your location IAD, can I proceed your booking?

USER: Sure, please proceed with booking.

ASSISTANT: Ok Smith, your ticket is confirmed with your requested name, have a happy journey.

USER: Thank you for your help.

ASSISTANT: You are welcome.