You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am Samantha Miller, can you help me to book a flight ticket?

ASSISTANT: Nice meeting you Miller.

USER: I just want to visit IAH from LGA for a refreshment trip in my weekend days.

ASSISTANT: Oh! That's good to hear Miller. Which dates that your are traveling to go?

USER: My dates are 05/12 and 05/14. Did you find any flight?

ASSISTANT: Sorry Samantha, there is no flights found on your provided data.

USER: Oh! really sad.

ASSISTANT: Thank you for your valuable time for approaching us. Have a nice day Samantha.

USER: That's fine, thank you for your help.