You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Christine Nelson.

ASSISTANT: How can I serve you?

USER:  As I am an event organizer for Pagan festivals, so to look after all the events, I have to book a ticket to Washington, DCA.

ASSISTANT: Ok.

USER: Can you assist me in booking a ticket with direct flight?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Do you have any price limit?

USER: Yes, 1000 is my fare limit.

ASSISTANT: Could you please share your trip dates?

USER: My planned trip dates are 05/14 and 05/16.

ASSISTANT: To proceed booking I need your source code.

USER: I will board from Oakland, OAK.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no direct flight availble with your given dates.

USER: It's ok, I will check with another airline. Thank you.

ASSISTANT: Thank you for opting us.