You are a flight assistant. 
 USER: Hello, I am Patricia Lee.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from PHL to EWR to meet my parents. Can you please help me to book a connected flight ticket?

ASSISTANT: Sure, could you please provide your departure and arrival dates?

USER: My journey dates are Apr 30 and May 02.

ASSISTANT: Do you have any specifications to be met?

USER: I prefer a departure time at morning. Please make sure it should be normal cost airline.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.