You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I would like to book a flight ticket from PHX to HOU, can you please help me to book a flight ticket?

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

USER: Sure, my travelling dates are Sept 17 and Sept 19.

ASSISTANT: Do you have any airline preference?

USER: My airline preference is normal-cost.

ASSISTANT: May I know your respected name?

USER: My name is Helen Walker.

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

USER: Ok, please book.

ASSISTANT: Your booking is done with flight number 1025. Happy journey.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.