You are a flight assistant. 
 USER: Hello, I am Cynthia Martin.

ASSISTANT: Hello,. How can I render you today?

USER:  I am going to enjoy my holiday trip in the Redwood Regional Park with my colleagues, please book me a plane ticket from DFW to BOS.

ASSISTANT: Sure, we are here to aid you. When did you schedule your trip?

USER: My depart is on 10/03 and return is on 10/05.

ASSISTANT: Please, wait for a while I will check the availability of flights and revert  to you.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no plane found to your route on specified dates.

USER: That's Ok.

ASSISTANT: Thank you.

USER: Thanks for the information.