You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to see the Houston Zoo with my family. Can you help me to book a ticket?

ASSISTANT: Sure, please share your journey dates?

USER: Travelling dates are 05/09 and 05/11.

ASSISTANT: Is there any specification do you need?

USER: Price limit 200 with one connection.

ASSISTANT: May I know your journey points?

USER: DEN-IAH.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. We are sorry to inform you that, we did not find any flights matching your details.

USER: No problem.

ASSISTANT: May I know your name for documentation purpose?

USER: Thank you, Have a nice day. Betty Wilson here.

ASSISTANT: Thank you for connecting with us. Have a nice day.