You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you today?

USER: Can you book a flight ticket from Seattle, SEA to Boston, BOS?

ASSISTANT: Sure, when you have planned to travel?

USER: My planned dates are from 01/11 to 01/13.

ASSISTANT: Can I have your name for booking purpose?

USER: My name is Eric Green.

ASSISTANT: Ok, do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: Thanks for your time, no flights were available based on your schedule.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.