You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I want to travel from EWR to PHX. Can you help me to book a flight ticket?

ASSISTANT: May I know your planned dates for this journey?

USER: I want to travel in the flight on Apr 18 and Apr 20.

ASSISTANT: May I know your name?

USER: Amy Smith.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: I am very sorry to say, there are no flights available for your journey for now.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing our assistance.