You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am planning to travel from BOS to OAK, can you please help in that?

ASSISTANT: Sure, please provide your planned dates.

USER: My date of travelling is on 02/19 to 02/21.

ASSISTANT: May I know your name please?

USER: John Young here.

ASSISTANT: Young, no flights has been found on your journey dates.

USER: That's ok.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your help.