You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, can you please share your connection limit.

USER: I need a single connecting flight.

ASSISTANT: Please provide your trip dates.

USER: My trip dates are from Jul 28 to Jul 30.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Deborah Brown.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.