You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. how may I aid you?

USER: My name is Steven Phillips, I want to book a flight ticket in business class. Can you help me with booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I will fly on Aug 3 and return on Aug 5.

ASSISTANT: Can you please share your airport codes?

USER: I need a flight from DEN to LAS.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing us.