You are a flight assistant. 
 USER: Hello, I am Nancy Carter.

ASSISTANT: Hello, how may I serve you?

USER: I am planing to visit HOU, can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, please share me your source airport codes?

USER: My source code is EWR.

ASSISTANT: May I know your planned journey dates?

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

ASSISTANT: Please mention your budget for flight ticket?

USER: My fare is 200.

ASSISTANT: Please wait for a while.

USER: OK.

ASSISTANT: Thank you for waiting, sorry there is no flight available as per your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us, we hope see you again.