You are a flight assistant. 
 USER: Hello. Jack Green here.

ASSISTANT: Hello, How can I aid you?

USER: I would like to travel from LGA to attend a seminar. Can you please help me to book a ticket to IAH?

ASSISTANT: Sure, Is there any restriction on fare?

USER: Yes, fare is 1000.

ASSISTANT: Can I know your planned journey dates please?

USER: My journey dates will be on 11/06 to 11/08.

ASSISTANT: Please wait for a while, I will check the availability of flights and get back to you with the flight details.

USER: Ok.

ASSISTANT: Thanks for waiting, there were no flights found with your given details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thanks for reaching us.