You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Deborah Lee here.

ASSISTANT: How can I aid you Lee?

USER: I have planned to visit Washington for my business meeting, can you please help me to book a flight ticket to go there?

ASSISTANT: Sure, please share your airport codes.

USER: Sure, I want to travel from LAS to IAD.

ASSISTANT: Please let me know your preferred dates of travelling.

USER: I take off from my location on 07/27 and please book a return ticket on 07/29.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Yes Lee, there is a flight for you from Hawaiian airlines with single connection. Shall I book?

USER: Everything is fine for me, you can proceed now.

ASSISTANT: Your booking is done with flight number 1006.

USER: Thank you for your help.

ASSISTANT: Thank you for using our service.

USER: Welcome.