You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Samantha Walker here, please help me out in booking the ticket from SEA to IAH.

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: My trip dates will be Sept 24 to Sept 26.

ASSISTANT: Do you have any specifications?

USER: My return time must be in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: Flight has to be with single connection.

ASSISTANT: Here, there are no flights available for your desired timings.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.