You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Anna Mitchell. I need to book a flight ticket from DEN to EWR, can you please help me for booking?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please share me your journey dates.

USER: I would like to travel on 10/31 to 11/02.

ASSISTANT: Ok, do you need any stopover within your journey?

USER: Yes, I need a connecting flighr.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I regret there is no flight available as per your details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for picking us.