You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Emily Lewis here. I would like to book a ticket from LAX to DCA, can you please help me with that?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: The travel dates are from 12/25 to 12/27.

ASSISTANT: Do you have any requirements?

USER: I am ok with any requirements.

ASSISTANT: There is a direct flight available for you, can I proceed with Spirit airlines?

USER: Please proceed with that.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thank you.

ASSISTANT: Welcome.