You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Will you please book me a plane ticket from HOU to OAK?

ASSISTANT: Yes, I am here to help you. Can I know on which dates you want to travel?

USER: I will start on Feb 19 and return on Feb 21.

ASSISTANT: Do you need any break in between the journey?

USER: Yes, I need 1 stop over.

ASSISTANT: Ok, for further process can you please share your name?

USER: I am Kimberly Campbell.

ASSISTANT: Please let us know if you have any other specifications.

USER: Make sure that my depart time must be in the evening.

ASSISTANT: Wait a minute please I will get back to you.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights found with your details.

USER: That's alright, thanks for your response.

ASSISTANT: Thank you for reaching us, have a nice day.