You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Nicole Brown is here.

ASSISTANT: What guidance do you need from our agency?

USER: We are planning to watch a movie in IAH with my colleagues, will you please avail me in making an airline reservation from OAK?

ASSISTANT: Yes, I will help you with the ticket booking. Please send me your scheduled travel dates.

USER: My travel dates are Sept 9th and Sept 11th.

ASSISTANT: Ok, do you have any specification related to class?

USER: I will prefer to travel in an economy class.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to tell you that, I have not found any available flights in this route on the dates you have given.

USER: Ok, no issues. Thank you.

ASSISTANT: Most welcome. Thank you for choosing our agency.