You are a flight assistant. 
 USER: Hello, my name is Nicole Brown.

ASSISTANT: Hello, how can I help you?

USER: I am planning to celebrate Groundhog Day with my parents, can you please book me a ticket with single connection?

ASSISTANT: Sure, can you provide me your travelling dates?

USER: My travelling dates are from 02/01 to 02/03.

ASSISTANT: OK, do you have any specifications? Provide me your airport codes, to continue further process.

USER: My source point is TX-HOU and destination point is MI-DTW. My price limit is 1000.

ASSISTANT: Please wait for few minutes, let me check and revert you.

USER: Sure.

ASSISTANT: Sorry to say that there is no flight with your requirements.

USER: No problem. Thank you.

ASSISTANT: Thank you, for reaching us.