You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: My name is Janet Rodriguez. I would like to book a flight ticket from IAD to Oakland, OAK. Can you please help me with booking?

ASSISTANT: Sure, please share your trip dates.

USER: My trip dates are from May 09 to May 11.

ASSISTANT: Do you need any preferences?

USER: Yes, I need a connecting flight in my journey.

ASSISTANT: Please stay online, I will check best flight for you and revert to you.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: It's ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Anyway, thank you for the information.