You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from MA-BOS to CA-OAK for attending my grandfather memorial services.

ASSISTANT: OK, can you provide me your journey dates?

USER: My departure day is 01/08, return day is 01/10.

ASSISTANT: Sorry to say you that there are no flights found with your requirement. Can you provide me your name?

USER: My name is Sharon Lewis.

ASSISTANT: Thank you, for reaching us.

USER: Thanks for your service.