You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Samantha Roberts. I planned to meet my friend in IAD, can you please help me to book a flight ticket from IAH?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: I prefer to travel on 03/29 and 03/31. Please make sure that the connection is 1.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you and have a nice day.