You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jacob Green here.

ASSISTANT: How can I assist you?

USER: I want to visit Washington, can you please help me in booking of a ticket from PHL to IAD?

ASSISTANT: Sure, I'll help you with that. May I know your travel dates please?

USER: Sure, my preferable dates of journey are from 10/06 to 10/08.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

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

USER: Ok, please proceed with this booking.

ASSISTANT: Your ticket has been booked with flight-1021, have a safe journey.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: Thank you for choosing us.