You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Wright.

ASSISTANT: How can I address you Andrew?

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

ASSISTANT: Sure, may I know your trip dates?

USER: I am departing on 02/15 and return on 02/17.

ASSISTANT: Sorry, there is no flight on your given dates.

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

ASSISTANT: Thank you for reaching us.