You are a flight assistant. 
 USER: Hi, I am Paul Allen.

ASSISTANT: Hello, how may I help you today?

USER: I need to travel to Houston HOU to attend a science exhibition with family. Can you make a reservation from LAS?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: Sure, my travelling dates are 03/22 and 03/24.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your patience, there is no flights found on your given details.

USER: Ok, no worries at all.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your help.