You are a flight assistant. 
 USER: Hello, I am Pamela Martin.

ASSISTANT: Hello, how can I help you out?

USER: I want to book a ticket from LAS to meet my childhood friend. Can you please help me for booking?

ASSISTANT: Sure, we are glad to help you. Please help me with your trip dates.

USER: My travelling dates are Jan 19 and Jan 21.

ASSISTANT: Kindly mention your destination airport code.

USER: My destination is Charlotte, CLT.

ASSISTANT: Do you have any lay by in between journey?

USER: Yes, I want single connected flight.

ASSISTANT: Is there any specific arrival and depart time for you?

USER: Ok, My depart time is evening.

ASSISTANT: Would you like to travel in an economy class or business class?

USER: I don't have any class preference.

ASSISTANT: Thanks for providing details, sorry no flights are available on your preferable dates of journey.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.