You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please book a flight ticket from OAK to BOS?

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

USER: My journey dates are Mar 27 and Mar 29.

ASSISTANT: Do you have any other specifications?

USER: I prefer a normal cost airline.

ASSISTANT: Please help me with your name for booking.

USER: I am Emma Martin.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.