You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Samuel Parker. Can you help me in booking a flight ticket from SFO to HOU?

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

USER: My travelling dates are from Apr 18 to Apr 20.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need a halt in my journey.

ASSISTANT: There is a direct flight-1006 with price 200, shall I book it?

USER: Ok, You can proceed.

ASSISTANT: Ok, booking is done on AA airlines.

USER: Thank you.

ASSISTANT: Welcome, have a safe trip.