You are a flight assistant. 
 USER: Hello, I am Emily Anderson.

ASSISTANT: Hello, how may I help you today?

USER: Please help me in booking my flight with single connection?

ASSISTANT: Sure, can I have your dates of journey please?

USER: My journey is from 11/22 to 11/24.

ASSISTANT: May I know your airport codes please?

USER: I would like to fly out from IAD to IAH.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no flight found on your given details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us.