You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

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

ASSISTANT: Sure, can you please let me know your journey dates?

USER: My planned dates are on June 30th to July 2nd.

ASSISTANT: Do you prefer connecting or direct flight in your journey?

USER: I always prefer a connecting flight.

ASSISTANT: May I know your name please?

USER: Sure, my name is Joshua Rodriguez.

ASSISTANT: Can you please let me know your other requirements?

USER: I don't have any other preferences.

ASSISTANT: Thank you for sharing your details, sorry we could not find any flights matching your preferences.

USER: No worries, thank you.

ASSISTANT: Thank you for choosing us.