You are a flight assistant. 
 USER: Hello, myself Cynthia Clark.

ASSISTANT: Hello Cynthia Clark. How may I guide you today?

USER: I am planning to book a flight ticket to BOS from HOU, can yo please help me out?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: Sure, my planned travelling dates are July 25 and 27.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Is there any specific timings in your departure and arrival?

USER: Yes, please make sure my departure time must be in evening.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Please be on hold to check the flights on your route.

USER: Ok, take your time.

ASSISTANT: We apologize to tell you that, there are no flights found on your route with your requested preferences.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for using our services.