You are a flight assistant. 
 USER: Hi, Frank Walker here.

ASSISTANT: Hello,. How shall I assist you?

USER: I want to exhibit my arts in an exhibition at Houston TX - HOU. Help me with booking the flight ticket.

ASSISTANT: Please provide travelling details so that I can check the availability of flight ticket.

USER: Sure, I would like to travel from Philadelphia, PA - PHL. I want to start my journey on 04/21 and end it on 04/23.

ASSISTANT: Ticket is found with single connection with price 300.

USER: It is perfect, You can proceed for booking.

ASSISTANT: Flight details are Airline spirit, flight number 1021.

USER: Thanks for your assistance.

ASSISTANT: Thanks. Have a great day!.