You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I render you at this moment?

USER: I need to visit Phoenix to meet my friend so please help me with flight ticket booking from EWR to PHX.

ASSISTANT: Sure, can I have your depart and arrival travelling dates?

USER: Thank you. I have planned my travel dates as Jan 17 and Jan 19.

ASSISTANT: Ok, do you need any stop over in between the journey?

USER: I am looking for single connecting flight.

ASSISTANT: We found a United Airlines with fare of 100 and a lay by in between the journey matches your schedule. Shall I proceed with booking?

USER: I would like to depart and returning  in evening time only. If this flight satisfies all these timings, you can proceed with booking.

ASSISTANT: Sorry we cannot find any flights departing and arriving at that time.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: May I know your good name please?

USER: Sure, myself Cynthia Hernandez.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.