You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I would like to visit Houston zoo with my friends, please help me in booking a ticket from SEA to IAH.

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My planned travel dates are on Apr 10 and Apr 12.

ASSISTANT: Ok could I have your name please?

USER: My name is Nicole Parker.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a direct flight for my trip.

ASSISTANT: Sorry, there is no flight with your requested connection limit.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: You are welcome, have a great day.