You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you with today?

USER: I need a help in booking a ticket.

ASSISTANT: Sure, I can help you with that. May I know your name to proceed further?

USER: My name is Melissa Nelson.

ASSISTANT: Melissa, can you please help me with the source and the destination airport code details?

USER: My source and the destination airport codes are from HOU to PHL.

ASSISTANT: Could you please provide your travelling dates?

USER: I want to travel in the dates of 10/19 to 10/21.

ASSISTANT: Can you help me with the price limit and the connection limit that you are looking for?

USER: The price should not exceed 1000 and the connection of flight should be 1.

ASSISTANT: There is a flight available at your request with price 200 and the connection limit is 1. Would you like me to proceed the booking?

USER: Sure, you can proceed the booking of flight ticket.

ASSISTANT: Sure. Your booking is confirmed. Your flight number is 1027 and the airline is Frontier.

USER: Thank you for helping me.

ASSISTANT: You are most welcome.