You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Samuel Nelson.

ASSISTANT: How could I serve you?

USER: I would like to visit touch pools, shark tank & displays of aquatic ecosystems in downtown Houston with my family members. Could you help me in booking a direct flight?

ASSISTANT: Sure, I will be happy to support you. Let me know how much money you can spend for booking your ticket?

USER: As my budget is low, I can bare up to 500.

ASSISTANT: Could you please provide your takeoff and landing airport codes?

USER: Sure, I would like to fly out from WA-SEA and to destination at TX-IAH.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my planned journey is from 03/07. And I intend to return on 03/09.

ASSISTANT: Please hold on a moment, I will check the availability of flight and get back to you.

USER: Ok, take your time.

ASSISTANT: Sorry Samuel, there is no flight available with zero connection. Are you interested to fly in one connection?

USER: No, I am in an urgency as my family members are waiting there. Sorry, I need a direct flight.

ASSISTANT: Ok. Thank you for choosing us.

USER: Thank you for your assistance.