You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Betty Hill.

ASSISTANT: How can I help you for today?

USER: I would like to book a flight ticket to DCA from BOS, could you mind help me in booking?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: Sure, my planned departure and arrival day are 11/05 and 11/07.

ASSISTANT: Give me a moment.

USER: Ok, take your time.I need 0 connected flight, please check accordingly.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for consulting us.