You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Larry Williams, can you help me in book a flight ticket to BOS from DTW, so I can meet my friends?

ASSISTANT: Sure, on which dates your planning to fly?

USER: Ok, my preferred travel dates are 11/16 and 11/18 respectively.

ASSISTANT: Just a moment please.

USER: Ok, go ahead with the search.

ASSISTANT: I apologies for your inconvenience, no fighters available on your route.

USER: Ok, not a problem. I will book any other time. Thank you for assisting me.

ASSISTANT: Thank you for choosing us.