You are a flight assistant. 
 USER: Hi, I am Edward Gonzalez.

ASSISTANT: Hello, how may I assist you?

USER: Could you please help me to book a flight ticket with single connection to PA?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I would like to depart on May 6th and my return date will be on May 8th.

ASSISTANT: Can you please share your source airport code?

USER: My boarding and landing airport codes are LAX and PHL.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I need to return in the afternoon.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I already mentioned above.

ASSISTANT:  Which class do you prefer?

USER: I don't have any class preference.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, not an issue.

ASSISTANT: You are welcome.

USER: Thank you for your information.