You are a flight assistant. 
 USER: Hello, I am Lisa Gonzalez.

ASSISTANT: Hello Lisa, how can I assist you today?

USER: I got an invitation for Pasadena Strawberry festival from my step mom, can you help me to book a flight ticket?

ASSISTANT: Sure, I will help you Lisa. Can you please tell me airport codes?

USER: My airport codes are SEA and HOU.

ASSISTANT: Ok, can I know your travel dates?

USER: My trip dates are 10/01 and 10/03.

ASSISTANT: Ok, let me check for the available flights.

USER: Sure.

ASSISTANT: Sorry Lisa, there are no flights available on 10/01 to HOU.

USER: Ok, no issues. Thanks for your response.

ASSISTANT: Thank you for contacting us and have a nice day.