You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to meet my sister who lives in New York city so, can you please help me with booking of flight ticket from SFO to EWR?

ASSISTANT: Sure, I will help you on that. Could you please provide your preferable dates that you want to travel?

USER: Sure, I need to travel on dates of 07/04 and 07/06.

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

USER: Please reserve on name of Ronald White.

ASSISTANT: Ok White, please be on hold to check the availability and I will revert you.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, there are no flights found with your requested dates of travelling.

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

ASSISTANT: Thank you for using our services, have a great day.

USER: Welcome.