You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Myself Stephen Thompson. I want to travel from IAH to EWR, can you please book a flight ticket for me?

ASSISTANT: Please provide your travel dates also.

USER: My travelling dates are from 11/20 till 11/22.

ASSISTANT: Sorry Thompson, there is no flight found with your requirements.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you.