You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can aid you today?

USER: This is Daniel Lopez want to book a flight from LAX to PHL, can you please help me with that?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My preferable travel dates are from Apr 12th to Apr 14th.

ASSISTANT: Do you have any preferences regarding timings of your journey?

USER: I would like to depart in the afternoon.

ASSISTANT: Do you have any limits on number of connections?

USER: I want a single connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.