You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today.

USER: Deborah Mitchell here. I want to travel from PHL to BOS for attending a agricultural meeting. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with this. Can you please share your travelling dates?

USER: My departure date is 11/06 and return date is 11/08.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait.

ASSISTANT: Deborah Mitchell, there are no flights available on your provided route.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you for contacting us.