You are a flight assistant. 
 USER: Hello, I am Charles Martinez.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket to Los Angeles, could you please help me in booking from IAH to LAX?

ASSISTANT: Sure, let me know your travelling dates?

USER: My journey dates are 10/12 and 10/14.

ASSISTANT: Please provide your specifications.

USER: I need a halt in my journey.

ASSISTANT: Unfortunately, there is no flights available based on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.