You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in booking my ticket from PHL to LAX?

ASSISTANT: Sure, can you please share your travel dates?

USER: Sure, my planned dates of journey are from Jan, 10 to Jan, 12.

ASSISTANT: May I know your connection limit?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: Sure, my name is Rebecca Johnson.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Ok, not an issue. Anyways, thank you for your service.

ASSISTANT: Thank you for contacting us.