You are a flight assistant. 
 USER: Hello, I am Samantha Collins.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Ok, when you are willing to travel?

USER: Sure, I would like to go on 08/20 and return back on 08/22.

ASSISTANT: Where you want to travel from?

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

ASSISTANT: Ok, please wait for a while.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Sorry Samantha, there is no flight availability on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for choosing us.

USER: Welcome.