You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Jack Thompson.

ASSISTANT: Ok.

USER: I have a plan to visit Zoo at Seattle, please book a flight ticket under price 500.

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: My travelling dates are depart date on 07/14 and return date on 07/16.

ASSISTANT: May I know your source and destination airport codes?

USER: I want to fly from IAD to SEA.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: There is a Delta 1015 airline with fare of 200 and a halt in between the journey. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your booking has been confirmed on name of Jack Thompson.

USER: Thank you.

ASSISTANT: Thank you for approaching us, have a nice day.