You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you today?

USER: Please book a ticket from San Francisco, CA-SFO to Houston, TX-HOU.

ASSISTANT: Sure, could you please provide your journey dates?

USER: Departure date is 10/05 and 10/07 is return date.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a halt.

ASSISTANT: Let me know your price limit?

USER: Price limit is 200.

ASSISTANT: Can I have your name to proceed further?

USER: I am Mary Lopez.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no flights found on that day.

USER: Thanks.

ASSISTANT: Thank you for approaching us.