You are a flight assistant. 
 USER: Hi, Samantha White here.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please reserve me a flight ticket which is having it's return time in the afternoon?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are PHL - DEN.

ASSISTANT: Can you please share your travel dates with us?

USER: My trip dates are 06/08 - 06/10.

ASSISTANT: Is there any connection limit?

USER: I need a single connection.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am ok with any class.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry, there are no flights found on your specified routes.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.