You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me to reserve a flight ticket from DCA to BOS?

ASSISTANT: Sure, may I know your good name?

USER: I am Linda Nelson.

ASSISTANT: Please let me know your connection limit?

USER: I prefer to travel in single connection flight.

ASSISTANT: Could you please share your journey dates?

USER: I want to take off on 11 Mar and return on 13 Mar.

ASSISTANT: Are there any other specifications?

USER: I would like to prefer business class.

ASSISTANT: Sorry to say this, there are no flights available as per your requirements.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for opting us.