You are a flight assistant. 
 USER: Hello, I am Sharon Jones.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from IAH to BOS to attend a conference. Can you please help me with booking?

ASSISTANT: Sure, please provide me your travelling dates?

USER: I would like to depart on 12/26 and return on 12/28.

ASSISTANT: OK, please wait I will  revert you.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your requested dates.

USER: Ok, no issue. Thanks for your kind information.

ASSISTANT: Thank you for availing us.