You are a flight assistant. 
 USER: Hello, Betty Martinez here.

ASSISTANT: Hello. How can I assist you Betty.

USER: I would like to reserve a ticket from LAX to SEA as of submitting my project review in Microsoft company, could you book it?

ASSISTANT: That's great, let me know your travel dates?

USER: The submission date is in between them, so, I would like to travel on 02/26 and returns back to my location on 02/28.

ASSISTANT: Wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that you couldn't be able to submit your project because of unavailability of flights.

USER: Ok, no problem, thank for your hand help in my flight search.

ASSISTANT: Thanks for contacting us, have a great day.