You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me to book a flight from IAD to LAX?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you . My travel dates are Jan  1 and Jan 3.

ASSISTANT: Can I know your name please?

USER: My name is Carol Wright.

ASSISTANT: Do you need any specifications?

USER: I need a connecting flight to travel.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, thank you for searching the flights.

ASSISTANT: Thank you for reaching us.