You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michelle Garcia.

ASSISTANT: How can I help you?

USER: I want to book a ticket from BOS to SEA, can you help me?

ASSISTANT: Your travelling dates please?

USER: Ok, my trip dates are 08/04 and 08/06.

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

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for choosing us.