You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to celebrate Groundhog Day at San Francisco, CA-SFO with my friends.Can you please help me to book a flight ticket with fare of 1000?

ASSISTANT: Sure, can you tell me your trip dates?

USER: I would like to start on 02/03 and catch a return flight on 02/05.

ASSISTANT: Ok. May I know your current location?

USER: My current location is Houston, TX-IAH.

ASSISTANT: Can I know your name?

USER: My name is Raymond Rodriguez.

ASSISTANT: Ok. Please give me a minute.

USER: Sure.

ASSISTANT: Raymond, there is no flight available with these dates.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Most welcome.