You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Raymond Allen here, I want to reserve my ticket from SEA to IAH, can you please help me in this?

ASSISTANT: Sure, can I know the travel dates please?

USER: Ok, my dates of journey is from 03/31 to 04/02.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Anyways, thank you for your valuable time.