You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: Can you please help me in booking a flight from DCA to LAX?

ASSISTANT: Sure, May I know your travelling dates?

USER: Sure, my travelling dates are on Jan 21st to 23rd.

ASSISTANT: Do you have any connection limit?

USER: I need a connected flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: You have a connecting flight 1012 in UA airlines and price 100, Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: May I know your name?

USER: Sure, my name is Nancy Scott.

ASSISTANT:  Your ticket has been processed and it will be send to your Email-Id shortly.

USER: Thank you.

ASSISTANT: Thank you.