You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please book a flight ticket from BOS to DFW?

ASSISTANT: Sure, I will help you with that. Can  I have your travel dates please?

USER: Thank you. I have planned my travel dates as Nov 01 and Nov 03.

ASSISTANT: Do you have any specifications to get best flight for you?

USER: Yes, I am looking for single connecting flight so please check with that.

ASSISTANT: Can I have your good name please?

USER: Sure, myself Linda Garcia.

ASSISTANT: Sorry to infirm you that no flight is available to you on your dates.

USER: That's ok, no problem. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.