You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jerry Carter.

ASSISTANT: How can I help you?

USER: I am planning to visit Seattle, can you please book me a ticket from BOS to SEA?

ASSISTANT: May I Know travelling dates please?

USER: My planned dates of journey are from 08/19 to 08/21.

ASSISTANT: I am sorry no flights found on your route.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you.