You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you today?

USER: I am Cynthia Martinez. Will you help me in booking a flight to Houston, HOU?

ASSISTANT: Sure, we are ready to help you.

USER: Thank you.

ASSISTANT: Could you please share your journey dates?

USER: 04/22-04/24 are the travel dates.

ASSISTANT: May I know your take off airport code please?

USER: Chicago, ORD is the airport code to attend the emergency meeting.

ASSISTANT: Do you need lay by in between the journey?

USER: Yes.

ASSISTANT: OK, please wait.

USER: Sure.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: Ok. Thank you.

ASSISTANT: Thank you for reaching us.