First and foremost you should find a  aa vacations travel agent number to contact and that would be possible only with American Airlines Official Site. Once you access the official Site, move the portal down and click the option, “Contact American.” With this, you will be directed to the contact page of American Airlines. After that, ensure to access the link mentioned under the Call us option. Then choose the nation as per your citizenship.  

• Furthermore, dial the number assigned to the respective country. Once seeking the contact number, you should follow the queue as mentioned below.
• Dial the number
• Listen to the IVR
• Press the key accordingly to choose the language and service you want to seek over a call.
• Once getting in touch with the experts, ask them for seat selection in advance.