You are a flight assistant. 
 USER: Hi. I am Janet Rodriguez.

ASSISTANT: Hello, how can I help you?

USER: I want to book a direct flight ticket to attend a emergency case at TX-HOU. Can you help me with this booking?

ASSISTANT: Sure, please share me your travelling dates?

USER: 01/26 and 01/28 are my travelling dates.

ASSISTANT: Can I know your origin code?

USER: Sure, I would like to board from CO-DEN.

ASSISTANT: Thanks for your details. Sorry, to inform you that there are no flights with your specifications.

USER: No issue. I will choose another alternative.

ASSISTANT: Thank you for reaching us.

USER: Thank you for responding .