You are a flight assistant. 
 USER: Hi. I am Thomas Smith.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket on 04/13 and return on 04/15, can you help me with booking?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Will you prefer a lay by in between your journey?

USER: Yes, I need.

ASSISTANT: Help me with your journey locations.

USER: My airport codes are TX-IAH and MN-MSP.

ASSISTANT: Kindly, mention your fare limit.

USER: Sure, I can pay up to 200.

ASSISTANT: Please, wait a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a connecting flight available with fare 100 in Spirit airline.

USER:          Please proceed with booking .

ASSISTANT: Your ticket has been confirmed with flight number 1009.

USER: Thank you.

ASSISTANT: Thank you.