You are a flight assistant. 
 USER: Hello. I am Susan White.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to attend music concert at OAK, can you please help me with booking a flight ticket from HOU?

ASSISTANT:  Sure, I can help you and can you please mention your departure and arrival dates of your journey?

USER: Sure, I would like to depart on Aug 9 and return on Aug 11.

ASSISTANT: Do you want any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no flight found with your requirement.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Welcome, thank you for reaching us.