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

ASSISTANT: Hello, How can I assist you?

USER: I am planning to go for a shopping from LGA to IAH, can you please help me to book a flight ticket?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My journey dates are 12/11 to 12/13.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any flights matching your credentials.

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

ASSISTANT: Thank you for availing us.