You are a flight assistant. 
 USER: Hello, I am Margaret Jackson.

ASSISTANT: Hello, how may I aid you?

USER: As I am a traveller, I would like to go for a long tour, at Houston. Can you help me to book a flight ticket within price of 500?

ASSISTANT: Sure. Please let me know your travel dates.

USER: My travelling dates are from 07/15 to 07/17.

ASSISTANT: Do you need any lay by in between?

USER: I need a single connection.

ASSISTANT: Ok, can you please provide me your airport codes.

USER: I want to fly from Philadelphia, PA - PHL to Houston, TX - HOU.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found an Delta airline with flight number 1012 and price of 100 matching your request. Shall I book the ticket?

USER: You can proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.