You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please book a ticket from DCA to SFO to go for Adventure trip.

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are July 27 and July 29.

ASSISTANT: Ok, May I know your connection limit?

USER: I want single connection.

ASSISTANT: Ok, please provide your class preference.

USER: I prefer economy class.

ASSISTANT: Ok, Do you have any other preferences?

USER: No.

ASSISTANT: Ok, May I know your name?

USER: I am Anthony Green.

ASSISTANT: We found a connecting flight of fare 100 with airline Southwest and number 1000. Can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.