You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Jonathan Lewis, could you please help me with booking ticket from IAH to BOS?

ASSISTANT: Ok, may I know your travel dates to assist you with the booking.

USER: Sure, my trip dates are 11/25 and 11/27.

ASSISTANT: Thank you for waiting, sorry as per our booking portal there is no flight available.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for connecting with our agency.