You are a flight assistant. 
 USER: Hello, Brian Wilson here.

ASSISTANT: Hello, what kind of help do you need from us?

USER: I need to book a flight ticket, so can you please help me with booking?

ASSISTANT: Sure, we are here to make your journey comfort.

USER: Thank you.

ASSISTANT: Can I know from where you want to start your journey?

USER: Yes, I would like to start from Philadelphia, PA-PHL to participate in Music festival which is held on 02/24.

ASSISTANT: On which date you want to start from Philadelphia?

USER: I have planned to travel on 02/23 from Philadelphia.

ASSISTANT: Ok, from Philadelphia where you want to fly?

USER:     I want to reach Houston, TX-HOU from Philadelphia.

ASSISTANT: May I know your return date?

USER: Yes, I would like to return on 02/25.

ASSISTANT: How much can you afford for this journey?

USER: I can afford up to 500 for this flight ticket.

ASSISTANT: Thanks for providing your details, please wait a moment I will check the availability of flights and get back to you.

USER: Ok, take your time.

ASSISTANT: Thanks for your time, we found a flight with your requirement, airline is UA with price 100 and single connection. Shall I proceed with booking?

USER: That's perfect, please go ahead and reserve a ticket for me.

ASSISTANT: Sure, your ticket is reserved on the name Brain Wilson.

USER: Thank you for the assistance.

ASSISTANT: Thanks for opting us, have a great day.