You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Sharon Davis. I need to book a flight ticket from OAK to HOU to meet my friends.

ASSISTANT: Sure Sharon Davis, I am here to help you for this. Can you please mention your travel dates?

USER: My travelling dates are 06/19 and 06/21.

ASSISTANT: Is there any other requirements?

USER: I want to return in the afternoon.

ASSISTANT: Do you have any airline preference?

USER: I do not have any airline preference.

ASSISTANT: Is there any other requirements?

USER: I need a break in between the journey.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: No worries, thank you for the information.

ASSISTANT: Thank you very much for contacting our agency.