You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jessica Robinson.

ASSISTANT: In which way I can help you today?

USER: Please book me a ticket from IAH to HOU to meet my family.

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: I have planned to travel on 09/09 and 09/11.

ASSISTANT: Is there any additional preferences do you have?

USER: I need a halt.

ASSISTANT: Ok, please wait a moment, I will check flight availability in this route.

USER: Ok.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.