You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you help me to book a ticket from DFW to IAH?

ASSISTANT: Sure, may I know on which dates you prefer to travel?

USER: Ok, please can you book a ticket for the dates Aug 14 and Aug 16?

ASSISTANT: Can you please mention your connection limit?

USER: Can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your name please?

USER: My name is Carolyn Gonzalez.

ASSISTANT: Are there any more specifications?

USER: Yes, please make sure the airlines is a normal-cost airlines.

ASSISTANT: Sorry, there are no flights are available matching your preferences.

USER: Ok, that is not a problem. Thank you for assisting me.

ASSISTANT: Thank you for connecting with us, we hope to serve you again.