You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Catherine Jackson, can you help me to reserve a flight from IAH?

ASSISTANT: Sure Jackson, can I know the travel dates please?

USER: My travelling dates are 01/21 and 01/23.

ASSISTANT: Could you provide the destination code please?

USER: My destination airport code is LAX.

ASSISTANT: Ok, wait a moment please. Sorry, there are no flights available as per your request.

USER: Ok, thank you for your time.

ASSISTANT: Thank you for approaching us.