Given the task definition and input, reply with output. In this task, you're given a dialogue between a customer and a flight booking agent with a gap in the conversation. Your job is to find the answer of the previous dialogue. Avoid using irrelevant extra information while creating the answer. The answer should be relevant to the question before the blank. If you fill the blank with a question, it should have an answer from the agent in the given dialogue. Fill the gap marked with underline.

customer: Hello. 
 agent: Hello. How may I assist you today? 
 customer: Can you please help me to search a flight from Atlanta, GA-ATL? 
 agent: Sure, I will search flight for you, can you share your destination airport code? 
 customer: Thank you, the destination airport code is CA-LAX. 
 __ 
 customer: My departure date is 08/19. The return date is 08/21. 
 agent: May I know your name please? 
 customer: Sure, my name is Jason Allen. 
 agent: Allen sorry for the inconvenience, no flights as per your details. 
 customer: No problem, I will search another way to complete my trip. 
 agent: Thank you for reaching us. 
 customer: Thank you for your information.

agent: On which dates your going to start your journey?