You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Lopez.

ASSISTANT: How can I guide you today?

USER: I would like to enjoy my weekend trip with my friends. Can you please book a ticket within the price of 1000?

ASSISTANT: Sure, I am here to help you in booking. Will you please share your planning dates of journey?

USER: My planning dates are from 10/21 till 10/23.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: Sure, my travelling airport codes are from SEA to HOU.

ASSISTANT: Please hold on for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for your information.

ASSISTANT: Welcome, thank you for reaching us.