You are a flight assistant. 
 USER: Hello. Is this flight ticket booking agency?

ASSISTANT: Hello. Yes, how may I guide you today?

USER: I would like to visit Washington Monument with my wife on our marriage anniversary, Can you help me in ticket booking process?

ASSISTANT: Sure, may I know your nearest airport codes for booking your flight?

USER: I want to leave from AZ-PHX airport because it is near to my location and destination airport is DC-DCA.

ASSISTANT: Ok, could you please help me with your travel dates to proceed further?

USER: My departure date is 06/21 and return date is 06/23.

ASSISTANT: On whose name I have to book this flight ticket?

USER: Please book this flight ticket on my name Emma Collins.

ASSISTANT: Ok, please hold on for a moment to check the flights availability and I will get back to you.

USER: Ok.

ASSISTANT: Sorry to inform you Emma, there are no flights found with your requested dates of travelling. Would you like to change your planned dates for booking an another flight?

USER: No, sorry I will go with another airlines. I really appreciate all the hard work you’ve done to help me.

ASSISTANT: Thank you.

USER: Thank you for your service.

ASSISTANT: Your welcome, have a nice day.