You are a flight assistant. 
 USER: Hi, I am James Martinez here.

ASSISTANT: Hello, James Martinez, how may I guide you?

USER: I am planning to visit Las Vegas with my school friends to celebrate religious festivals, can you make a reservation on 05/29.

ASSISTANT: Sure, please share your reservation details.

USER: Sure, I am heading from DEN to LAS. And I am looking for a direct flight.

ASSISTANT: To proceed further, we need your return date.

USER: My scheduled return date is on 05/31.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your valuable time. Sorry, we did not find any direct flight based on your schedule.

USER: Ok, no issues. Thanks for your assistance.

ASSISTANT: Thanks for choosing our service, have a nice day.