You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have to attend a Live Concert at Seattle, could you please help me with booking a flight ticket from IAD to SEA?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: I would like to depart on Jan 27th and return on Jan 29th.

ASSISTANT: Do you prefer any specific class to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you  have any other specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Can I have your good name please?

USER: I am Edward Turner.

ASSISTANT: Southwest airlines running a flight in your  route with connection 1 and the ticket  fare is 100 in economy class. Shall I proceed with booking?

USER: Please confirm the booking.

ASSISTANT: Ok, your ticket booking has done and the flight number is 1003.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us, have a great  journey.