You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Ryan Hall. Can you please book a flight ticket from PHL to EWR? As I need to visit my favourite place in New York city.

ASSISTANT: Sure, I am glad to help you in that flight ticket booking. Can you please help me in providing your journey dates?

USER: Sure, I would like to travel on dates of 03/04 and 03/06.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights that are moving on your trip dates to book the ticket.

USER: Oh! It is sad to hear. Anyway, I will choose another agency this time. Thank you for your time.

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