You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Alexander Jackson. I like to travel from BOS to PHL for my friend's birthday party, could you help in booking my flight ticket?

ASSISTANT: Sure Alexander, may I know your travelling dates please of your trip?

USER: My travelling dates are 09/07 to 09/09.

ASSISTANT: Sorry, there is no flights found as per your request.

USER: It's OK. Thank you.

ASSISTANT: Thank you, for consulting us.