You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I am Elizabeth Roberts.

ASSISTANT: Ok.

USER: Can you please book me a ticket from DCA to DEN to meet my friends?

ASSISTANT: Sure, I am here to help you. May I know your trip dates?

USER: I would like to leave between 07/10 and 07/12.

ASSISTANT: May I know your price limit?

USER: I can afford up to 500.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a connecting flight with price of 200 and 1006 flight number. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your seat has been reserved with Delta airline.

USER: Thank you so much.

ASSISTANT: Thank you for availing us.