You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Sept 28 and 30.

ASSISTANT: Do you need a stopover in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your journey timings?

USER: I am comfortable with any timings.

ASSISTANT: Please, provide your name.

USER: My name is John White.

ASSISTANT: Sorry to say, currently there are no flights available on your travelling dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.