You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand?

USER: My name is Sandra Evans and I would like to confirm my ticket with direct flight.

ASSISTANT: Ok.

USER: Would you be my helping hand in this?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Can I have your travelling dates please?

USER: My travelling dates are 09/13 to 09/15.

ASSISTANT: May I know your airport codes?

USER: Airport codes are SFO to DEN.

ASSISTANT: Please share your price limit.

USER: Price limit is 1000.

ASSISTANT: Unfortunately , there is no direct flight available with your criteria.

USER: No problem. Thank you for your support.

ASSISTANT: Thank you for approaching us.