You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend for an workshop in SEA. Can you please make a reservation from HOU?

ASSISTANT: Sure, may I know the travelling dates?

USER: Sure, I want to travel on Nov 24 and need to return on Nov 26.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: Is there any other requirements?

USER: I prefer an economy class to travel.

ASSISTANT: May I know your name?

USER: Myself Donald Parker.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, no flights found with your preferable dates.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for opting us.