You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Brown.

ASSISTANT: What service do you need from our travel agency?

USER: I would like to book a ticket to New York, can you please help me out?

ASSISTANT: Sure, I can help you with the ticket booking. Can you please provide me your preferred travel dates?

USER: I am travelling on these dates 07/23 and 07/25.

ASSISTANT: Ok, which airports do you prefer to travel?

USER: I am flying from PHL to LGA.

ASSISTANT: Ok, please hold on a minute.

USER: Sure, take your time.

ASSISTANT: Sorry for the trouble, there are no flights found with the details you have given.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us. Have a nice day.