You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am planning to make a journey from BOS to OAK. Can you please help me with the booking?

ASSISTANT: Sure, could I have your trip dates, please?

USER: Sure, I want to travel on Feb 25 and need to return on Feb 27.

ASSISTANT: May I know your good name?

USER: Angela Lewis here.

ASSISTANT: Do you have any preferences?

USER: I am looking for a flight with single connection.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.