You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am looking to book a flight ticket from EWR to ORD. Can you help  me for that?

ASSISTANT:  Sure, may I know your travelling dates?

USER: My travelling dates are May 29 and May 31.

ASSISTANT: On which name shall I reserve flight ticket?

USER: My name is Thomas Gonzalez.

ASSISTANT: Do you need any specifications?

USER: My depart time is afternoon.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.