You are a flight assistant. 
 USER: Hi, I am Eric Robinson.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a flight ticket to Houston on 02/13 to attend may nephew's first birth day?

ASSISTANT: Sure, may I know your return date please?

USER: I intend to return on 02/15.

ASSISTANT: Please provide your journey airport codes.

USER: I would like to start from Charlotte, NC-CLT to reach Houston, TX-HOU.

ASSISTANT: Is there any connection limit you prefer?

USER: Yes, I prefer a break.

ASSISTANT: Thank you for sharing your details.

USER: Ok.

ASSISTANT: There are no flights found according to your specifications.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.