You are a flight assistant. 
 USER: Hi. I am Nancy King here.

ASSISTANT: Hello. How can I assist you today?

USER: I want to reserve my ticket from IAH to SEA, can you please help me to reserve my ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Ok, my dates of travel is from 06/23 to 06/25. Please make sure that the price limit is 200.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: There is no flights found under your preferable details.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for reaching us, have a great day.