You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua Nelson from Denver.

ASSISTANT: How may I guide you today?

USER: I would like to book a ticket to visit a new place at LAX. Can you please help me out to book a ticket from DEN?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: Thank you for your response, I want to take off on May 08 and book my return ticket also on May 10.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any specific timings in your departure and arrival?

USER: I want to take off in morning time.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want 1 break in my journey.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok.

ASSISTANT: We regret to inform you that, there are no flights running on your route with your required specifications.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us, have a great day.