You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from SFO to DCA?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: My journey dates are Sept 22 to Sept 24.

ASSISTANT: May I know your name?

USER: My name is Betty Lewis.

ASSISTANT: Do you have any other specifications?

USER: I need a single connection of flight.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: We found United airlines with connecting flight and number 1004 fare of 200 and economy class, Shall I proceed for booking?

USER: Ok, please proceed to book.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for approaching us.