You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jason Thomas.

ASSISTANT: How can I help you?

USER: Can you find a flight from BOS to CLT, to celebrate my brother anniversary.

ASSISTANT: May I know your travelling dates please?

USER: Sure, my travelling dates should be 03/21 and 03/23.

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

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

ASSISTANT: Thank you for choosing us.