You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please book a flight ticket from HOU to LAS?

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My trip dates are 04/20 and 04/22.

ASSISTANT: May I know your requirements?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: Rebecca Wright here.

ASSISTANT: There is a connecting flight 1028 of Delta airlines, can I proceed?

USER: Yes, proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.