You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I am Karen Martin from Houston.

ASSISTANT: How can I provide service to you?

USER: Could help me in booking my flight ticket to attend my sister baby shower occasion in Dallas, DFW?

ASSISTANT: Sure, please provide your price limit?

USER: Sure, I can spend up to 200.

ASSISTANT: When did you planned to travel?

USER: I will depart on 02/04 and 02/06 will be my return date.

ASSISTANT: Do you have any class preference?

USER: I am flexible to travel in any class.

ASSISTANT: Kindly mention your boarding airport code?

USER: My nearest airport to board is IAH.

ASSISTANT: What do you prefer either connecting flight or direct flight?

USER: I prefer to travel in connecting flight.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights are available to your preferable locations.

USER: Ok, I will choose other airline. Thank you for kind help.

ASSISTANT: Thanks for availing us.