You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Daniel Lee.

ASSISTANT: How can I help you?

USER: I am planning to visit to Houston, TX - IAH to attend international conference.

ASSISTANT: Ok.

USER: Aid me to book a ticket from PHL.

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Can I have your depart date?

USER: I will depart on 03/25.

ASSISTANT: How much you can afford for this journey?

USER: I will return on 03/27. I can afford up to 1000.

ASSISTANT: Thank you for sharing the details, hold on a while.

USER: OK.

ASSISTANT: Thank you for waiting. There is a flight available on your route with two connections in Delta airline. May I confirm it?

USER: You can proceed.

ASSISTANT: Ok, your ticket has been confirmed with flight number 1007.

USER: Thank you.

ASSISTANT: Thank you for approaching us.