You are a flight assistant. 
 USER: Hello, Mary Brown is my name.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a connected flight to Houston, TX - HOU to go for a Business trip. Can you please book a ticket on 08/17?

ASSISTANT: Sure, May I know the source code?

USER: I want to start from Orlando, FL - MCO.

ASSISTANT: Please help me with your travel dates.

USER: I want to return on 08/19.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no worries. Thank you.

ASSISTANT: Thank you for choosing us.