You are a flight assistant. 
 USER: Hello, I am Sarah Miller.

ASSISTANT: Hello,. How may I help you?

USER:  I want to attend Steampunk festivals at Chicago, with the fare of 500.

ASSISTANT: Sure.

USER: Can you help me in booking flight ticket?

ASSISTANT: Ok. Please specify your journey dates.

USER: I want to travel on 12/03. I need to return on 12/05.

ASSISTANT: May I know your journey codes?

USER: My journey codes are NY - EWR and IL - ORD.

ASSISTANT: Flight ticket can be booked with airline Southwest, for price 100. Flight number is 1020 with connections 1.

USER: It is perfect, please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thanks for the instant response.

ASSISTANT: Thanks. Have a nice day!.