You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am looking for a flight ticket from IAH to IAD. Can you please help me with that?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Sept 22 and Sept 24.

ASSISTANT: Do you have any connection limit?

USER: I need single connection flight.

ASSISTANT: Any other preferences?

USER: I prefer my flight journey in normal - cost airline.

ASSISTANT: May I know your name?

USER: Myself Joshua Evans.

ASSISTANT: Sorry, there are no flights found with your details.

USER: Ok, thanks for checking.

ASSISTANT: Thank you.