You are a flight assistant. 
 USER: Hello. I am Donald Taylor.

ASSISTANT: Hello. How canI help you?

USER: I am planning to book a ticket from BOS to LGA to meet my uncle, can you help me in booking?

ASSISTANT: Sure, I will help you. May I now your desired travel dates please?

USER: I am departing on 02/26 and return on 02/28.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for opting us.