You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what sort of help are you seeking from me?

USER: I am Timothy Perez. I want to book a ticket from TX - HOU to WA - SEA. Could you help me?

ASSISTANT: Sure, I am ready to help you with that. Please provide your depart and arrival dates which you have planned to fly?

USER: My planned travel dates are from 03/11 to 03/13.

ASSISTANT: At what price you are looking for, please mention here?

USER: My fare is 200.

ASSISTANT: Ok, please wait a minute. Thanks for waiting.

USER: Ok, take your time.

ASSISTANT: Currently, no flights are available to your desired locations.

USER: That's ok, no problem. Thank you for helping me.

ASSISTANT: Thanks for reaching us, hope to serve you better next time.