You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Patrick Hall.

ASSISTANT: How can I aid you today?

USER: I am looking for a flight from EWR to PHX, can you help me in booking the flight ticket?

ASSISTANT: I am gleeful to help you with that. May I know your trip dates?

USER: Sure, my planned travel dates are 10/18 and 10/20.

ASSISTANT: Please wait for some time.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to say this, no flights are available on your desired route.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.