You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My travelling dates are Apr 26 to Apr 28.

ASSISTANT: Ok, please share your name.

USER: Joshua Baker.

ASSISTANT: May I know your connection limit?

USER: I need a single connection of flight.

ASSISTANT: Do you have any specification?

USER: I want to depart in the morning.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.