You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Susan Parker.

ASSISTANT: How can I assist you at this moment?

USER: I would like to travel Phoenix for a business meeting. Can you please help me for booking the ticket from EWR to PHX?

ASSISTANT: Sure Susan, I will help you with that. Can you please help me with your travel dates too?

USER: I will depart on 04/16 and again I will be return back on 04/18.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Susan, no flight is available to you on your dates.

USER: Not a big problem, any how thank you for your help.

ASSISTANT: Most welcome. Thank you for choosing us, have a good day.