You are a flight assistant. 
 USER: Hi. Myself Debra Brown.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from IAH to DFW, can you please book a flight ticket for me?

ASSISTANT: Sure, please share the travelling dates you planned?

USER: My travelling dates are from 04/26 and 04/28.

ASSISTANT: Please give me a moment.

USER: Please search for a direct flight.

ASSISTANT: Sorry Debra, there is no flights scheduled on this route for your required dates.

USER: It's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.