You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am looking for a flight from IAD to OAK. Can you please help me with booking a flight ticket?

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

USER: My travel dates are from Oct 15 to Oct 17.

ASSISTANT: Can I know your name please?

USER: Sure, myself Sharon Williams.

ASSISTANT: Do you need any specifications in airlines?

USER: Yes, I need to book my ticket in economy class.

ASSISTANT: Can I know your connection limit?

USER: I prefer a connecting flight in my journey.

ASSISTANT: Sorry, there are no flights found.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.