You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to book a flight from IAH to CLT?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, I want to travel on Sept 29 and need to return on Oct 1.

ASSISTANT: Do you have any other specifications?

USER: I prefer an economy class to travel.

ASSISTANT: Please help me with your name for booking.

USER: I am Samantha Garcia.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for checking.