You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Christopher Smith.

ASSISTANT: How may I aid you?

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

ASSISTANT: Yes, please I will help you with flight ticket booking. Ok, now please share your travel dates?

USER: My preferred journey dates are 10/22 and 10/24.

ASSISTANT: Thanks for waiting patiently. But I am sorry to say that there are no flights available.

USER: Its ok, no issues. Thank you for the information.

ASSISTANT: Thank you.