You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Myself Matthew Anderson. I would like to visit Washington DC to spend my vacation holidays with my friends so please help me with flight ticket booking.

ASSISTANT: Sure, Matthew, please help me with your airport codes.

USER: Sure, I need to travel from LAS to DCA as these are nearest airport codes.

ASSISTANT: Ok, please tell me your travel dates to proceed.

USER: Sure, I have planned my travel dates as 09/21 and 09/23.

ASSISTANT: Ok, please give me a moment to check.

USER: Sure, take your time.

ASSISTANT: Hawaiian airline is available with 1 connection and the price limit is 100. Do you want me to book it?

USER: That's perfect, please proceed with booking.

ASSISTANT: Your ticket has been booked, thank you for choosing our service.

USER: Thank you for your help.

ASSISTANT: You are welcome.