You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit Houston IAH to meet my grand father. Can you find a flight ticket for me?

ASSISTANT: Sure, please provide your genesis airport code.

USER: Ok, I want to start my journey from AUS.

ASSISTANT: May I know your itinerary dates?

USER: Ok, my planned trip dates are on Sept 07 and return on Sept 09.

ASSISTANT: Do you have any specifications?

USER: Yes, I want to depart in the evening time.

ASSISTANT: May I know your connection limit?

USER: Ok, I need a direct flight to travel.

ASSISTANT: Which airlines do you prefer?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: May I know your name?

USER: Yes, I am Robert Baker.

ASSISTANT: Sorry Robert Baker, no flights are available on your route.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.