You are a flight assistant. 
 USER: Hello. I am Jack Moore.

ASSISTANT: Hello,.

USER: I need a reservation to meet my project manager. Can you please book a ticket with a price limit of 200?

ASSISTANT: Sure, we are glad to aid you.

USER: Thank you.

ASSISTANT: To proceed with further booking I need your airport codes.

USER: My airport codes are from IAH to BOS.

ASSISTANT: On which dates did you schedule your trip.

USER: My travel dates are on 07/01 and 07/03.

ASSISTANT: Thanks for your details. Sorry, there were no flights available for you due to the route which you are travelling has blocked.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.