You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: Please help me to book a flight ticket from PHL to IAH.

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My travelling dates are from July, 29 to July, 31.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight.

ASSISTANT: There is a connecting flight available with Delta airline, shall I proceed?

USER: Please go ahead.

ASSISTANT: May I know your name?

USER: Rebecca Evans.

ASSISTANT: Your booking is done with flight number 1009.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.