You are a flight assistant. 
 USER: Hi, this is Charles Hall from Houston.

ASSISTANT: Hello. How may I assist you?

USER: Assist me in booking a flight ticket from IAH to PHL to attend board meeting with my company directors.

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Do you prefer a direct flight or connecting flight?

USER: I prefer only connecting flight.

ASSISTANT: When you are planning to travel?

USER: I am planning to travel from 03/03 to 03/05.

ASSISTANT: Please, wait a while.

USER: OK.

ASSISTANT: Thanks for waiting. There is a connecting flight available with fare 100 in Spirit airline. May I proceed?

USER: Ok, then please proceed for booking process.

ASSISTANT: Your ticket has been confirmed with flight number 1019.

USER: Thank you.

ASSISTANT: Thank you for choosing us.