You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can assist you today?

USER: I want to travel to San Francisco to attend a wedding party, so can you help me in reserving a flight ticket from New York?

ASSISTANT: Can you please mention your preferable airport code names?

USER: Yes, the airport codes are EWR to SFO.

ASSISTANT: May I know your journey dates for booking flight ticket?

USER: Ok, the travelling dates are 06/07 and 06/09.

ASSISTANT: Ok, just give me a moment, I will check is there any flight available or not.

USER: Ok.

ASSISTANT: Sorry for the inconvenience no flights available as per your requested dates.

USER: It's ok, no problem. I will choose any other source to travel.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is Ronald Green.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome.