You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kimberly Lopez here.

ASSISTANT: Lopez, how can I help you?

USER: I am searching for a direct flight from IAH to CLT, can you help me?

ASSISTANT: I am here to help you, can you please provide me your trip dates?

USER: The trip dates are 07/26 and 07/28.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry Lopez, there are no flights available on your preferred dates.

USER: Not an issue, thank you for your information.

ASSISTANT: Thank you for contacting us and have a nice day.