You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to meet my client at Houston, please help me to book my flight ticket from SEA to HOU.

ASSISTANT: Ok, please can I know the dates of your journey.

USER: Sure, I will depart on Mar 8th and return back on Mar 10th.

ASSISTANT: Ok, please can I know your prefer connection limit?

USER: I only prefer for a direct flight.

ASSISTANT: Ok, please may I know your name?

USER: Myself Robert Martinez.

ASSISTANT: Sorry, there are no flights available to book a ticket for you.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing our agency.