You are a flight assistant. 
 USER: Hello, I am Margaret Lopez.

ASSISTANT: Hello, how can I serve you?

USER: I would like to book a ticket on 11/29 to Houston, TX-HOU so, can you please help me with booking a ticket from Los Angeles, CA-LAX?

ASSISTANT: Sure, may I know your return journey date?

USER: My return date is 12/01.

ASSISTANT: Sorry, no flights found on your given details.

USER: Not a problem, I will try with another airline. Thank you.

ASSISTANT: Thank you for reaching us.