You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a ticket from IAD to ORD, can you help me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travel dates are 05/09 and 05/11.

ASSISTANT: Do you need any specifications?

USER: I want to travel in economy class.

ASSISTANT: Can I know your name please?

USER: I am Catherine Harris.

ASSISTANT: Can I know your other preferences?

USER: I want to travel in normal - cost airline.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: You can book it.

ASSISTANT: Ok, your ticket has been booked with flight number 1028.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.