You are a flight assistant. 
 USER: Hello, I am Carolyn Johnson.

ASSISTANT: Hello. How may I help you today?

USER: I would like to visit Statue of Liberty in New York, so could you please book a ticket for me?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: May I know your locations to find a flight for you?

USER: My source and destination airport codes are HOU and LGA.

ASSISTANT: Ok, please provide your preferable dates to go.

USER: I would like to go on 02/03 and return back on 02/05.

ASSISTANT: According to your criteria, there is no flight for you on your route.

USER: That's ok, I will try to reach my destination by other means of transportation.

ASSISTANT: Ok, thanks for contacting us.

USER: Welcome.