You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I am Stephen Smith. I need a single connecting flight from DEN to BOS to attend a birthday party, can you please help me with flight ticket booking?

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

USER: Thank you and I want to depart on 7th of Nov and I will recur back on 9th of Nov.

ASSISTANT: Do you have any specific timings of your journey?

USER: My depart would be evening and my arrival would be afternoon, please check with this time preferences.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Sure, take your time.

ASSISTANT: Sorry Stephen Smith, no flight is available to you in your specific timings.

USER: Sad to hear that one from your end, anyway thank you for checking and providing the information.

ASSISTANT: Thank you for choosing us, have a good day.