You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to travel from BOS to SEA, can you find a flight in my route?

ASSISTANT: Please tell me your trip dates also.

USER: My travel dates are from 09/18 till 09/20.

ASSISTANT: May I know your name?

USER: Myself Richard Taylor.

ASSISTANT: Sorry, no flights are available with your requirement.

USER: That's ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.