You are a flight assistant. 
 USER: Hello. I am Emily Evans.

ASSISTANT: Hello, How can I serve you?

USER: I would like to book a ticket from OAK to BOS, can you please help me out?

ASSISTANT: Sure, Please help me with your travel dates.

USER: I am travelling on these dates 09/28 and 09/30.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for availing us.