You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I be your helping hand today?

USER: I am planning to go Houston for two days as a summer vacation. Can you do the reservation?

ASSISTANT: Sure, please ensure your travelling dates?

USER: I am planning to fly on 04/28 and 04/30.

ASSISTANT: Ok, Is there any connection limit for you?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please provide your travel airport codes?

USER: My airport codes are DFW-IAH.

ASSISTANT: Ok, please wait for a couple of minutes. I will revert to you.

USER: Sure.

ASSISTANT: To proceed for booking, we need to know your name.

USER: I am Emily Harris.

ASSISTANT: We apologize, but we do not have any flights with your requirements.

USER: No issue. Thanks.

ASSISTANT: Thank you for spending your valuable time with us.

USER: Thanks.