You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: May I know your trip dates?

USER:              My trip dates are 16 and 18 of Apr.

ASSISTANT: Do you prefer any specifications?

USER: I need a break in between the journey.

ASSISTANT: May I know your name?

USER:     My name is Dorothy Rodriguez.

ASSISTANT: Delta airlines providing a connected flight. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.