You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking from IAD to OAK?

ASSISTANT: Please provide your journey dates?

USER: My travelling dates are from Jan 1 to Jan 3.

ASSISTANT: Ok. Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Please let me know your name?

USER: My name is Deborah Young.

ASSISTANT: Sorry currently there is no flight for your travelling dates.

USER: Ok, No issues.

ASSISTANT: Thank you.

USER: Thank you.

ASSISTANT: Have a nice day ahead!.