You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am William Miller.

ASSISTANT: How may I lend a hand to?

USER: I would like to book a ticket from MCO to BOS, can you help me?

ASSISTANT: Miller, I am here to help you. When you are willing to travel?

USER: My travel dates are 12/21 and 12/23.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Miller sorry to intimate, no flights are available with your requirements.

USER: No problem, thanks for checking.

ASSISTANT: Thank you Miller for approaching our agency.