You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a ticket for attending a function in my aunt home, will you help me on that?

ASSISTANT: Sure, may I know your name and travelling details please?

USER: Sure, my travelling dates are 11/08 to 11/10. Myself Donna Hall and my source and destinations are from SFO to IAH.

ASSISTANT: Ok. Hold on for a moment.

USER: Ok.

ASSISTANT: Sorry for the inconvenience. We could not find a flight for you.

USER: Ok, there is no issues. Thank you for your help.

ASSISTANT: Welcome.