You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in ticket booking from OAK to DEN?

ASSISTANT: Sure, when would you like me to book your ticket?

USER: My travel dates are from 11/17 to 11/19.

ASSISTANT: Do you prefer a connection in between your journey?

USER: I am looking for direct flight.

ASSISTANT: Please, share if you have any other specifications.

USER: I want to book my departure ticket in the evening.

ASSISTANT: Give me a minute, please.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, there were no flights available that matches with your requirements.

USER: It's ok, thank you.

ASSISTANT: Can I have your name for documentation purpose?

USER: Myself Justin Walker.

ASSISTANT: Thank you.

USER: Most welcome.