You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I am Margaret Collins. I want to book a flight ticket to meet my cousin in Washington, could you help me in booking a flight ticket?

ASSISTANT: Sure, please share me your airport codes?

USER: My airport codes are from HOU to DCA.

ASSISTANT: Do you need any halt in between the journey?

USER: My journey dates are from 02/28 to 03/01. I need a halt in this journey.

ASSISTANT: Thanks for the details, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no flight found on your given journey data.

USER: Not an issue. Thank you for your kind information.

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