You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am looking for a normal cost airline for my journey, can you please help me out with that?

ASSISTANT: Sure, can you specify your source and destination airport codes?

USER: Thank you for considering my request, I want to travel from SEA to DFW.

ASSISTANT: What are your travel dates?

USER: I am planning to move on Mar 15 and please book my return ticket on Mar 17.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, my name is Barbara White.

ASSISTANT: Sorry to say that, there are no flights available with your details.

USER: Oh! Sad to hear that. Anyway, I will find another alternative. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Welcome.