You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to book a flight from LAS to PHL?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, I want to travel on June 16 and need to return on June 18.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a flight with single connection.

ASSISTANT: Please help me with your name for booking.

USER: Myself Nicole Edwards.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Most welcome.