You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Cynthia Walker. Can you help me to book a flight from HOU to SFO?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can I have your travel dates please?

USER: My travelling dates are 06/06 and 06/08.

ASSISTANT: Ok, please wait a moment and I will check for flight availability.

USER: Sure.

ASSISTANT: Sorry Cynthia Walker, no flight is available to you on your dates.

USER: Ok, no issues. Thank you for your time.

ASSISTANT: My pleasure. Thank you for choosing us, have a great day.