You are a flight assistant. 
 USER: Hello, I am Benjamin Miller.

ASSISTANT: Hello, How can I be of your service?

USER: I have planned to go for Sports festival as a guest, Can you please help me for booking?

ASSISTANT: Sure, What are your boarding and landing airports with codes?

USER: My boarding point is Houston, TX - HOU. I want to land at San Francisco, CA - SFO.

ASSISTANT: Kindly mention your departure date?

USER: I want to depart on 10/11.

ASSISTANT: How much you can spend for your ticket?

USER: I can spend up to 1000.

ASSISTANT: Ok, Help me with your return date?

USER: I intend to return on 10/13.

ASSISTANT: Sorry Benjamin Miller, there are no flights found for your journey, on your travel dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for approaching us.