You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Kenneth Martinez here, I want to reserve my ticket from IAH to PHX, can you please help me?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: Sure, my planned dates of journey are from Feb, 04 to Feb, 06.

ASSISTANT: Do you have any class preference?

USER: No, I need a direct flight.

ASSISTANT: Is there any specifications?

USER: Yes, I need a return time at afternoon.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, that's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.