You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Janet Moore. Can you help me in booking my flight ticket from EWR to PHL?

ASSISTANT: Sure, may I know your travel dates/.

USER: My trip dates are Dec 19th to Dec 21st.

ASSISTANT: At what time do you like to travel?

USER: My return flight should be in the evening.

ASSISTANT: Do you have any specification?

USER: I need a normal cost airline.

ASSISTANT: Sorry, there is no flight on your details.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.