You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to book a ticket from SEA to HOU. Can you please help me out?

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

USER: I am planning to travel on Aug 09 and return back on Aug 11.

ASSISTANT: Do you have any limits on number of connections?

USER: I am ok with any connection.

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

USER: No.

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

USER: My name is Patricia Green.

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

USER: That's fine, thank you for your service.

ASSISTANT: Welcome, thank you for reaching us.