You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: I am Andrew Edwards. I need to book a flight ticket from EWR to PHX, Can you please help me for booking?

ASSISTANT: Sure, we are here to help you. May I know at what price you are looking for airfare?

USER: I can pay up to 200.

ASSISTANT: Can you please let me know your planned journey dates?

USER: I would like to travel on 08/25 to 08/27.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that unfortunately there is no flights available by the given details.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us. Have a  nice day.

USER: Thanks for your information.