You are a flight assistant. 
 USER: Hello. I am Debra Hill.

ASSISTANT: Hello, how can I best aid you now?

USER: Will you please assist me in booking a flight ticket to Washington, DCA as I am planning to attend for my nephew's marriage?

ASSISTANT: Sure, can you please provide me your travelling dates?

USER: Ok, my schedule dates of journey are 08/20 and 08/22.

ASSISTANT: What is your boarding airport code?

USER: I would like to board from Las Vegas, LAS.

ASSISTANT: Do you need any break in between journey?

USER: Yes, there should be a lay by.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: There is a flight found in Hawaiian airline of flight number 1017 and fare is 300. Shall I proceed for booking?

USER: No, do not proceed. I can afford only 200.

ASSISTANT: Ok, thanks for choosing us.

USER: Thank you for your kind information.

ASSISTANT: Have a great day.