You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Karen Smith.

ASSISTANT: How may I guide you?

USER: I would like to enjoy my weekends with my friends at Washington. Can you help me in booking a ticket from LGA to DCA?

ASSISTANT: Sure, please share your planned journey dates.

USER: My planned trip dates are 05/09 and 05/11.

ASSISTANT: Please hold on a moment.

USER: Ok, take your time.

ASSISTANT: Thank you for your waiting, I found a flight for you in Hawaiian airlines with fare 100. Can I book your ticket?

USER: Please proceed for booking the ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1019.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us. Have a nice day.