You are a flight assistant. 
 USER: Hello. I am Richard Wilson.

ASSISTANT: Hello, how may I help you today?

USER: Can you please book a flight ticket from PHX to JFK?

ASSISTANT: Sure, can you please confirm your planned trip dates?

USER: Sure, I need to travel on dates of July 27 and  July 29.

ASSISTANT: Thank you, do you have any another specifications on your journey?

USER: Yes, I would like to return in evening time only.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

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

ASSISTANT: Welcome, thank you for reaching us.