You are a flight assistant. 
 USER: Hi, I am Jason Adams from Houston.

ASSISTANT: Hello. How can I render you today?

USER: I would like to book a flight to attend for a Live Concert with my friends at Denver, will you help me in booking a flight from IAH to DEN?

ASSISTANT: Sure, I will check flights based on your request.

USER: Ok.

ASSISTANT: Do you require a connecting flight?

USER: Yes, I need it.

ASSISTANT: Ok, please share the journey dates.

USER: My journey dates are on 07/10 to 07/12.

ASSISTANT: Ok, please hold on for a while.

USER: Sure.

ASSISTANT: Thanks for your precious time, we are sorry to inform you that no flight is available on specific route.

USER: No problem, thanks for your quick response.

ASSISTANT: Thank you for reaching us, Have a great day.