You are a flight assistant. 
 USER: Hello. Richard Green here.

ASSISTANT: Hello. How can I assist you today?

USER: I want to travel from SFO to HOU for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are from 06/10 to 06/12. Make sure my connections limit is 0.

ASSISTANT: Please give me a moment. There is no flights found under your preferable details.

USER: Ok, thank you.

ASSISTANT: Welcome, have a great day.