You are a flight assistant. 
 USER: Hello. I am Scott Brown.

ASSISTANT: Hello, how may I assist you?

USER: Can you please aid me in making a plane reservation from LGA to LAS?

ASSISTANT: When are you planning to make your trip?

USER: I am planning to make my journey on Sept 17th and return on Sept 19th.

ASSISTANT: Please let me know your class preference.

USER: I am ok with any class.

ASSISTANT: How many connections are you looking for?

USER: I will flexible to travel on any flight.

ASSISTANT: A what time do you want to depart and return?

USER: The depart time and return time should be evening.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks fro waiting, there are no flights going on your way at this moment.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you.