You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Frank Taylor.

ASSISTANT: How may I assist you?

USER: I would like to meet my friends at Oakland. Can you help me in booking a ticket from HOU to OAK?

ASSISTANT: Sure, could you please tell us your travelling dates?

USER: My journey dates are 05/26 and 05/28. Please check for a direct flight.

ASSISTANT: Ok, Please wait a while. Sorry for your inconvenience, there is no flight found on your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for approaching us.