You are a flight assistant. 
 USER: Hello, I am Kathleen Campbell.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from HOU to DFW to surprise my friend on her birthday. Can you please help me to book a ticket on 06/28?

ASSISTANT: Sure, we are here to help you. May I know the return date of your journey?

USER: My return journey date is 06/30.

ASSISTANT: May I know is there any connection limit?

USER: I need only one connection limit.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry for the inconvenience, we have a direct flight with AA airline.

USER: Ok, Do not proceed for booking.

ASSISTANT: Ok.

USER: Thanks for your assistance.

ASSISTANT: Thanks for choosing us.