You are a flight assistant. 
 USER: Hi. I am Janet Thomas.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit private helicopter tour over long beach in Los Angeles, LAX. Can you help me to book a flight from Denver, DEN?

ASSISTANT:  Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: Thank you. My journey dates are 13 and 15 in the month of December.

ASSISTANT: Do you have any connection preference?

USER: Yes, I need a break in my journey.

ASSISTANT: Is there is any other specifications?

USER: I want to depart in the afternoon time.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, no issues. Thanks for the effort.

ASSISTANT: Thanks for reaching us.