You are a flight assistant. 
 USER: Hi. Barbara Smith here.

ASSISTANT: Hello.

USER: Can you book a connecting flight to Houston for my business trip?

ASSISTANT: Yes, I will help you with that. May I know your airport codes so I can book?

USER: Sure.

ASSISTANT: Thank you.

USER: My airport codes for boarding the flight are IAH to CLT.

ASSISTANT: Please can I know the travel dates too?

USER: My travelling dates will be 07/28 to 07/30. My price limit is less than 1000.

ASSISTANT: Sorry, there are no flights available at that location.

USER: Ok, not a problem.

ASSISTANT: Thank you for choosing our agency.

USER: Thank you.