You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from CLT to EWR. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am happy to help you and can you please let me know your journey dates?

USER: I want to fly in the flight on Dec 26 and Dec 28.

ASSISTANT: Is there any connection preference?

USER: I am looking for a connection of 1.

ASSISTANT: Can I know your airlines specification?

USER: I don't have any.

ASSISTANT: May I know your name for booking purpose?

USER: Robert Lee.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: I regret to inform you that there is no flight obtained on your travel dates to book a flight for your journey.

USER: That's ok. Anyways, thank you.

ASSISTANT: You are most welcome and thank you for opting us.