You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Daniel Smith here. Can you help me to find a flight from IAH to OAK to attend a birthday party?

ASSISTANT: Sure, can I know your trip dates for further process?

USER: My trip dates are 09/29 and 10/01.

ASSISTANT: Ok, please be on hold for a moment.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no flight available based on your details.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us.