You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Sharon Mitchell. I need to travel PHX and BOS, can you please reserve flight ticket?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are Apr,12 and Apr,14.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: That's ok I will make any other alternate source to reach my destination. Thank you for searching the flights.

ASSISTANT: Thank you for reaching us.