You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me to book a flight from ORD to HOU?

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

USER: Sure, I want to travel on June 23 and need to return on June 25.

ASSISTANT: Can I know your name please?

USER: My name is Edward Hernandez.

ASSISTANT: Do you need any specifications?

USER: I need a connecting flight which return in the morning time.

ASSISTANT: Can I know your other preferences?

USER: I do not have any other specifications.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for contacting us.