You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a normal cost airlines for my journey, can you please reserve a flight ticket for me?

ASSISTANT: Sure, let me know your travel dates please?

USER: Thank you, my boarding is on Dec 08 and please book my return ticket on Dec 10.

ASSISTANT: Could you please share me your airport codes?

USER: Sure, I will prefer CLT and IAD as my origin and destination airports respectively.

ASSISTANT: May I know your connection limit?

USER: Sure, I would prefer single connection.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: Ok, my name is Jessica Smith.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Oh! Sad to hear that. Anyway, I will contact another booking agency. Thank you for the information.

ASSISTANT: Thank you for contacting us.