You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jessica Jones.

ASSISTANT: How can I assist you today?

USER: I would like to spend some time with my friends at Washington. Can you help me in booking a ticket from ORD to IAD?

ASSISTANT: That's great! I'll help you in that. May I know your preferable dates to do journey?

USER: My preferred journey dates are 05/13 and 05/15.

ASSISTANT: Fine, please be on hold for few seconds.

USER: Ok, take your time.

ASSISTANT: Frontier airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Please book the ticket.

ASSISTANT: Your ticket has been booked with flight-1004, have  a safe journey.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.