You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Please book a ticket from SFO to DFW to go for long trips.

ASSISTANT: Sure, on which dates would you like to travel?

USER: My travelling dates are Mar 19 and Mar 21.

ASSISTANT: Is there any connection limit?

USER: Yes, I want single connection.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, I am John Thompson.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: We found a connecting flight in Delta Airlines with flight number 1009 having an economy class. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.