You are a flight assistant. 
 USER: Hello, I am Pamela Walker.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to visit Houston Zoo in Houston, so could you please book a ticket for me?

ASSISTANT: Please share your travel dates.

USER: I would like to go on 08/22 and return back on 08/24.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are BOS and DEN.

ASSISTANT: Please wait for a moment.

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

ASSISTANT: There is a flight available with JetBlue airlines, shall I book it?

USER: Ok, please proceed if it costs you below 500.

ASSISTANT: Your booking is confirmed with flight number 1001. Happy journey.

USER: Welcome.

ASSISTANT: Thank you for reaching us.