You are a flight assistant. 
 USER: Hi. I am Samuel Thomas.

ASSISTANT: Hello, How can I best assist you now?

USER: I would like to travel from ORD to IAH for an important meeting, can you please search is there any flight available for me?

ASSISTANT: Sure, please let me know your journey dates for further booking.

USER: My trip dates are Jul 25 to Jul 27.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am ok with any class.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a direct flight.

ASSISTANT: Please be on hold for sometime to check the suitable flight for your journey.

USER: Sure.

ASSISTANT: We are sorry to say that, there is no direct flight found on your requested dates.

USER: No issue, thank you.

ASSISTANT: Thanks for consulting with us.