You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Please book me a flight ticket from SFO to SEA to meet my family.

ASSISTANT: Sure, may I know our planned travel dates?

USER: I have planned to travel on Jan 23rd and return on Jan 25th.

ASSISTANT: Do you have any another specifications on your journey?

USER: I prefer connecting flight.

ASSISTANT: Any another requirements on your trip?

USER: No, thanks.

ASSISTANT: May I know your name for the booking process?

USER: Gary Anderson.

ASSISTANT: Sorry, no flights are available on your specified dates.

USER: Ok, thank you.

ASSISTANT: Welcome, thank you for reaching us.